Factors of 351,000. Calculator of Proper, Improper, Prime and Compound Divisors, if Any

All the factors (divisors) of the number 351,000. Connection with the prime factorization of the number

To find all the divisors of the number 351,000:

  • 1. Decompose the number into prime factors.
  • See how you can find out how many factors (divisors) the number has, without actually calculating them.
  • 2. Multiply the prime factors in all their unique combinations, that yield different results.

1. Carry out the prime factorization of the number 351,000:

The prime factorization of a number: finding the prime numbers that multiply together to make that number.


351,000 = 23 × 33 × 53 × 13
351,000 is not a prime number but a composite one.


  • Prime number: a natural number that is divisible (divided evenly) only by 1 and itself. A prime number has exactly two factors: 1 and the number itself.
  • Examples of prime numbers: 2 (factors 1, 2), 3 (factors 1, 3), 5 (factors 1, 5), 7 (factors 1, 7), 11 (factors 1, 11), 13 (factors 1, 13), ...
  • Composite number: a natural number that has at least one factor other than 1 and itself. So it is neither a prime number nor 1.
  • Examples of composite numbers: 4 (it has 3 factors: 1, 2, 4), 6 (it has 4 factors: 1, 2, 3, 6), 8 (it has 4 factors: 1, 2, 4, 8), 9 (it has 3 factors: 1, 3, 9), 10 (it has 4 factors: 1, 2, 5, 10), 12 (it has 6 factors: 1, 2, 3, 4, 6, 12), ...

  • » Online calculator. Check whether a number is prime or not. The prime factorization of composite numbers (decomposition into prime factors)


How to count the number of factors of a number?

Without actually finding the factors

  • If a number N is prime factorized as:
    N = am × bk × cz
    where a, b, c are the prime factors and m, k, z are their exponents, natural numbers, ....
  • ...
  • Then the number of factors of the number N can be calculated as:
    n = (m + 1) × (k + 1) × (z + 1)
  • ...
  • In our case, the number of factors is calculated as:
  • n = (3 + 1) × (3 + 1) × (3 + 1) × (1 + 1) = 4 × 4 × 4 × 2 = 128

But to actually calculate the factors, see below...

2. Multiply the prime factors of the number 351,000

  • Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
  • Also consider the exponents of these prime factors.
  • Also add 1 to the list of factors (divisors). All the numbers are divisible by 1.

All the factors (divisors) are listed below - in ascending order

The list of factors (divisors):

Numbers other than 1 that are not prime factors are composite factors (divisors).

neither prime nor composite = 1
prime factor = 2
prime factor = 3
composite factor = 22 = 4
prime factor = 5
composite factor = 2 × 3 = 6
composite factor = 23 = 8
composite factor = 32 = 9
composite factor = 2 × 5 = 10
composite factor = 22 × 3 = 12
prime factor = 13
composite factor = 3 × 5 = 15
composite factor = 2 × 32 = 18
composite factor = 22 × 5 = 20
composite factor = 23 × 3 = 24
composite factor = 52 = 25
composite factor = 2 × 13 = 26
composite factor = 33 = 27
composite factor = 2 × 3 × 5 = 30
composite factor = 22 × 32 = 36
composite factor = 3 × 13 = 39
composite factor = 23 × 5 = 40
composite factor = 32 × 5 = 45
composite factor = 2 × 52 = 50
composite factor = 22 × 13 = 52
composite factor = 2 × 33 = 54
composite factor = 22 × 3 × 5 = 60
composite factor = 5 × 13 = 65
composite factor = 23 × 32 = 72
composite factor = 3 × 52 = 75
composite factor = 2 × 3 × 13 = 78
composite factor = 2 × 32 × 5 = 90
composite factor = 22 × 52 = 100
composite factor = 23 × 13 = 104
composite factor = 22 × 33 = 108
composite factor = 32 × 13 = 117
composite factor = 23 × 3 × 5 = 120
composite factor = 53 = 125
composite factor = 2 × 5 × 13 = 130
composite factor = 33 × 5 = 135
composite factor = 2 × 3 × 52 = 150
composite factor = 22 × 3 × 13 = 156
composite factor = 22 × 32 × 5 = 180
composite factor = 3 × 5 × 13 = 195
composite factor = 23 × 52 = 200
composite factor = 23 × 33 = 216
composite factor = 32 × 52 = 225
composite factor = 2 × 32 × 13 = 234
composite factor = 2 × 53 = 250
composite factor = 22 × 5 × 13 = 260
composite factor = 2 × 33 × 5 = 270
composite factor = 22 × 3 × 52 = 300
composite factor = 23 × 3 × 13 = 312
composite factor = 52 × 13 = 325
composite factor = 33 × 13 = 351
composite factor = 23 × 32 × 5 = 360
composite factor = 3 × 53 = 375
composite factor = 2 × 3 × 5 × 13 = 390
composite factor = 2 × 32 × 52 = 450
composite factor = 22 × 32 × 13 = 468
composite factor = 22 × 53 = 500
composite factor = 23 × 5 × 13 = 520
composite factor = 22 × 33 × 5 = 540
composite factor = 32 × 5 × 13 = 585
This list continues below...

... This list continues from above
composite factor = 23 × 3 × 52 = 600
composite factor = 2 × 52 × 13 = 650
composite factor = 33 × 52 = 675
composite factor = 2 × 33 × 13 = 702
composite factor = 2 × 3 × 53 = 750
composite factor = 22 × 3 × 5 × 13 = 780
composite factor = 22 × 32 × 52 = 900
composite factor = 23 × 32 × 13 = 936
composite factor = 3 × 52 × 13 = 975
composite factor = 23 × 53 = 1,000
composite factor = 23 × 33 × 5 = 1,080
composite factor = 32 × 53 = 1,125
composite factor = 2 × 32 × 5 × 13 = 1,170
composite factor = 22 × 52 × 13 = 1,300
composite factor = 2 × 33 × 52 = 1,350
composite factor = 22 × 33 × 13 = 1,404
composite factor = 22 × 3 × 53 = 1,500
composite factor = 23 × 3 × 5 × 13 = 1,560
composite factor = 53 × 13 = 1,625
composite factor = 33 × 5 × 13 = 1,755
composite factor = 23 × 32 × 52 = 1,800
composite factor = 2 × 3 × 52 × 13 = 1,950
composite factor = 2 × 32 × 53 = 2,250
composite factor = 22 × 32 × 5 × 13 = 2,340
composite factor = 23 × 52 × 13 = 2,600
composite factor = 22 × 33 × 52 = 2,700
composite factor = 23 × 33 × 13 = 2,808
composite factor = 32 × 52 × 13 = 2,925
composite factor = 23 × 3 × 53 = 3,000
composite factor = 2 × 53 × 13 = 3,250
composite factor = 33 × 53 = 3,375
composite factor = 2 × 33 × 5 × 13 = 3,510
composite factor = 22 × 3 × 52 × 13 = 3,900
composite factor = 22 × 32 × 53 = 4,500
composite factor = 23 × 32 × 5 × 13 = 4,680
composite factor = 3 × 53 × 13 = 4,875
composite factor = 23 × 33 × 52 = 5,400
composite factor = 2 × 32 × 52 × 13 = 5,850
composite factor = 22 × 53 × 13 = 6,500
composite factor = 2 × 33 × 53 = 6,750
composite factor = 22 × 33 × 5 × 13 = 7,020
composite factor = 23 × 3 × 52 × 13 = 7,800
composite factor = 33 × 52 × 13 = 8,775
composite factor = 23 × 32 × 53 = 9,000
composite factor = 2 × 3 × 53 × 13 = 9,750
composite factor = 22 × 32 × 52 × 13 = 11,700
composite factor = 23 × 53 × 13 = 13,000
composite factor = 22 × 33 × 53 = 13,500
composite factor = 23 × 33 × 5 × 13 = 14,040
composite factor = 32 × 53 × 13 = 14,625
composite factor = 2 × 33 × 52 × 13 = 17,550
composite factor = 22 × 3 × 53 × 13 = 19,500
composite factor = 23 × 32 × 52 × 13 = 23,400
composite factor = 23 × 33 × 53 = 27,000
composite factor = 2 × 32 × 53 × 13 = 29,250
composite factor = 22 × 33 × 52 × 13 = 35,100
composite factor = 23 × 3 × 53 × 13 = 39,000
composite factor = 33 × 53 × 13 = 43,875
composite factor = 22 × 32 × 53 × 13 = 58,500
composite factor = 23 × 33 × 52 × 13 = 70,200
composite factor = 2 × 33 × 53 × 13 = 87,750
composite factor = 23 × 32 × 53 × 13 = 117,000
composite factor = 22 × 33 × 53 × 13 = 175,500
composite factor = 23 × 33 × 53 × 13 = 351,000
128 factors (divisors)

What times what is 351,000?
What number multiplied by what number equals 351,000?

All the combinations of any two natural numbers whose product equals 351,000.

1 × 351,000 = 351,000
2 × 175,500 = 351,000
3 × 117,000 = 351,000
4 × 87,750 = 351,000
5 × 70,200 = 351,000
6 × 58,500 = 351,000
8 × 43,875 = 351,000
9 × 39,000 = 351,000
10 × 35,100 = 351,000
12 × 29,250 = 351,000
13 × 27,000 = 351,000
15 × 23,400 = 351,000
18 × 19,500 = 351,000
20 × 17,550 = 351,000
24 × 14,625 = 351,000
25 × 14,040 = 351,000
26 × 13,500 = 351,000
27 × 13,000 = 351,000
30 × 11,700 = 351,000
36 × 9,750 = 351,000
39 × 9,000 = 351,000
40 × 8,775 = 351,000
45 × 7,800 = 351,000
50 × 7,020 = 351,000
52 × 6,750 = 351,000
54 × 6,500 = 351,000
60 × 5,850 = 351,000
65 × 5,400 = 351,000
72 × 4,875 = 351,000
75 × 4,680 = 351,000
78 × 4,500 = 351,000
90 × 3,900 = 351,000
100 × 3,510 = 351,000
104 × 3,375 = 351,000
108 × 3,250 = 351,000
117 × 3,000 = 351,000
120 × 2,925 = 351,000
125 × 2,808 = 351,000
130 × 2,700 = 351,000
135 × 2,600 = 351,000
150 × 2,340 = 351,000
156 × 2,250 = 351,000
180 × 1,950 = 351,000
195 × 1,800 = 351,000
200 × 1,755 = 351,000
216 × 1,625 = 351,000
225 × 1,560 = 351,000
234 × 1,500 = 351,000
250 × 1,404 = 351,000
260 × 1,350 = 351,000
270 × 1,300 = 351,000
300 × 1,170 = 351,000
312 × 1,125 = 351,000
325 × 1,080 = 351,000
351 × 1,000 = 351,000
360 × 975 = 351,000
375 × 936 = 351,000
390 × 900 = 351,000
450 × 780 = 351,000
468 × 750 = 351,000
500 × 702 = 351,000
520 × 675 = 351,000
540 × 650 = 351,000
585 × 600 = 351,000
64 unique multiplications

The final answer:
(scroll down)


351,000 has 128 factors (divisors):
1; 2; 3; 4; 5; 6; 8; 9; 10; 12; 13; 15; 18; 20; 24; 25; 26; 27; 30; 36; 39; 40; 45; 50; 52; 54; 60; 65; 72; 75; 78; 90; 100; 104; 108; 117; 120; 125; 130; 135; 150; 156; 180; 195; 200; 216; 225; 234; 250; 260; 270; 300; 312; 325; 351; 360; 375; 390; 450; 468; 500; 520; 540; 585; 600; 650; 675; 702; 750; 780; 900; 936; 975; 1,000; 1,080; 1,125; 1,170; 1,300; 1,350; 1,404; 1,500; 1,560; 1,625; 1,755; 1,800; 1,950; 2,250; 2,340; 2,600; 2,700; 2,808; 2,925; 3,000; 3,250; 3,375; 3,510; 3,900; 4,500; 4,680; 4,875; 5,400; 5,850; 6,500; 6,750; 7,020; 7,800; 8,775; 9,000; 9,750; 11,700; 13,000; 13,500; 14,040; 14,625; 17,550; 19,500; 23,400; 27,000; 29,250; 35,100; 39,000; 43,875; 58,500; 70,200; 87,750; 117,000; 175,500 and 351,000
out of which 4 prime factors: 2; 3; 5 and 13.
Numbers other than 1 that are not prime factors are composite factors (divisors).
351,000 and 1 are sometimes called improper factors, the others are called proper factors (proper divisors).

  • A quick way to find the factors (the divisors) of a number is to break it down into prime factors.
  • Then multiply the prime factors and their exponents, if any, in all their different combinations.

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Factors (divisors), common factors (common divisors), the greatest common factor, GCF (also called the greatest common divisor, GCD, or the highest common factor, HCF)

  • If the number "t" is a factor (divisor) of the number "a" then in the prime factorization of "t" we will only encounter prime factors that also occur in the prime factorization of "a".
  • If there are exponents involved, the maximum value of an exponent for any base of a power that is found in the prime factorization of "t" (powers, or multiplicities) is at most equal to the exponent of the same base that is involved in the prime factorization of "a".
  • Hint: 23 = 2 × 2 × 2 = 8. 2 is called the base and 3 is the exponent. 23 is the power and 8 is the value of the power. We sometimes say that the number 2 is raised to the power of 3.
  • For example, 12 is a factor (divisor) of 120 - the remainder is zero when dividing 120 by 12.
  • Let's look at the prime factorization of both numbers and notice the bases and the exponents that occur in the prime factorization of both numbers:
  • 12 = 2 × 2 × 3 = 22 × 3
  • 120 = 2 × 2 × 2 × 3 × 5 = 23 × 3 × 5
  • 120 contains all the prime factors of 12, and all its bases' exponents are higher than those of 12.
  • If "t" is a common factor (divisor) of "a" and "b", then the prime factorization of "t" contains only the common prime factors involved in the prime factorizations of both "a" and "b".
  • If there are exponents involved, the maximum value of an exponent for any base of a power that is found in the prime factorization of "t" is at most equal to the minimum of the exponents of the same base that is involved in the prime factorization of both "a" and "b".
  • For example, 12 is the common factor of 48 and 360.
  • The remainder is zero when dividing either 48 or 360 by 12.
  • Here there are the prime factorizations of the three numbers, 12, 48 and 360:
  • 12 = 22 × 3
  • 48 = 24 × 3
  • 360 = 23 × 32 × 5
  • Please note that 48 and 360 have more factors (divisors): 2, 3, 4, 6, 8, 12, 24. Among them, 24 is the greatest common factor, GCF (or the greatest common divisor, GCD, or the highest common factor, HCF) of 48 and 360.
  • The greatest common factor, GCF, of two numbers, "a" and "b", is the product of all the common prime factors involved in the prime factorizations of both "a" and "b", taken by the lowest exponents.
  • Based on this rule it is calculated the greatest common factor, GCF, (or the greatest common divisor GCD, HCF) of several numbers, as shown in the example below...
  • GCF, GCD (1,260; 3,024; 5,544) = ?
  • 1,260 = 22 × 32
  • 3,024 = 24 × 32 × 7
  • 5,544 = 23 × 32 × 7 × 11
  • The common prime factors are:
  • 2 - its lowest exponent (multiplicity) is: min.(2; 3; 4) = 2
  • 3 - its lowest exponent (multiplicity) is: min.(2; 2; 2) = 2
  • GCF, GCD (1,260; 3,024; 5,544) = 22 × 32 = 252
  • Coprime numbers:
  • If two numbers "a" and "b" have no other common factors (divisors) than 1, gfc, gcd, hcf (a; b) = 1, then the numbers "a" and "b" are called coprime (or relatively prime).
  • Factors of the GCF
  • If "a" and "b" are not coprime, then every common factor (divisor) of "a" and "b" is a also a factor (divisor) of the greatest common factor, GCF (greatest common divisor, GCD, highest common factor, HCF) of "a" and "b".