To find all the divisors of the number 330,000:
- 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 330,000:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
330,000 = 24 × 3 × 54 × 11
330,000 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), ...
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 = (4 + 1) × (1 + 1) × (4 + 1) × (1 + 1) = 5 × 2 × 5 × 2 = 100
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 330,000
- 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 = 2
2 =
4
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
prime factor =
11
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
4 =
16
composite factor = 2
2 × 5 =
20
composite factor = 2 × 11 =
22
composite factor = 2
3 × 3 =
24
composite factor = 5
2 =
25
composite factor = 2 × 3 × 5 =
30
composite factor = 3 × 11 =
33
composite factor = 2
3 × 5 =
40
composite factor = 2
2 × 11 =
44
composite factor = 2
4 × 3 =
48
composite factor = 2 × 5
2 =
50
composite factor = 5 × 11 =
55
composite factor = 2
2 × 3 × 5 =
60
composite factor = 2 × 3 × 11 =
66
composite factor = 3 × 5
2 =
75
composite factor = 2
4 × 5 =
80
composite factor = 2
3 × 11 =
88
composite factor = 2
2 × 5
2 =
100
composite factor = 2 × 5 × 11 =
110
composite factor = 2
3 × 3 × 5 =
120
composite factor = 5
3 =
125
composite factor = 2
2 × 3 × 11 =
132
composite factor = 2 × 3 × 5
2 =
150
composite factor = 3 × 5 × 11 =
165
composite factor = 2
4 × 11 =
176
composite factor = 2
3 × 5
2 =
200
composite factor = 2
2 × 5 × 11 =
220
composite factor = 2
4 × 3 × 5 =
240
composite factor = 2 × 5
3 =
250
composite factor = 2
3 × 3 × 11 =
264
composite factor = 5
2 × 11 =
275
composite factor = 2
2 × 3 × 5
2 =
300
composite factor = 2 × 3 × 5 × 11 =
330
composite factor = 3 × 5
3 =
375
composite factor = 2
4 × 5
2 =
400
composite factor = 2
3 × 5 × 11 =
440
composite factor = 2
2 × 5
3 =
500
composite factor = 2
4 × 3 × 11 =
528
composite factor = 2 × 5
2 × 11 =
550
This list continues below...
... This list continues from above
composite factor = 2
3 × 3 × 5
2 =
600
composite factor = 5
4 =
625
composite factor = 2
2 × 3 × 5 × 11 =
660
composite factor = 2 × 3 × 5
3 =
750
composite factor = 3 × 5
2 × 11 =
825
composite factor = 2
4 × 5 × 11 =
880
composite factor = 2
3 × 5
3 =
1,000
composite factor = 2
2 × 5
2 × 11 =
1,100
composite factor = 2
4 × 3 × 5
2 =
1,200
composite factor = 2 × 5
4 =
1,250
composite factor = 2
3 × 3 × 5 × 11 =
1,320
composite factor = 5
3 × 11 =
1,375
composite factor = 2
2 × 3 × 5
3 =
1,500
composite factor = 2 × 3 × 5
2 × 11 =
1,650
composite factor = 3 × 5
4 =
1,875
composite factor = 2
4 × 5
3 =
2,000
composite factor = 2
3 × 5
2 × 11 =
2,200
composite factor = 2
2 × 5
4 =
2,500
composite factor = 2
4 × 3 × 5 × 11 =
2,640
composite factor = 2 × 5
3 × 11 =
2,750
composite factor = 2
3 × 3 × 5
3 =
3,000
composite factor = 2
2 × 3 × 5
2 × 11 =
3,300
composite factor = 2 × 3 × 5
4 =
3,750
composite factor = 3 × 5
3 × 11 =
4,125
composite factor = 2
4 × 5
2 × 11 =
4,400
composite factor = 2
3 × 5
4 =
5,000
composite factor = 2
2 × 5
3 × 11 =
5,500
composite factor = 2
4 × 3 × 5
3 =
6,000
composite factor = 2
3 × 3 × 5
2 × 11 =
6,600
composite factor = 5
4 × 11 =
6,875
composite factor = 2
2 × 3 × 5
4 =
7,500
composite factor = 2 × 3 × 5
3 × 11 =
8,250
composite factor = 2
4 × 5
4 =
10,000
composite factor = 2
3 × 5
3 × 11 =
11,000
composite factor = 2
4 × 3 × 5
2 × 11 =
13,200
composite factor = 2 × 5
4 × 11 =
13,750
composite factor = 2
3 × 3 × 5
4 =
15,000
composite factor = 2
2 × 3 × 5
3 × 11 =
16,500
composite factor = 3 × 5
4 × 11 =
20,625
composite factor = 2
4 × 5
3 × 11 =
22,000
composite factor = 2
2 × 5
4 × 11 =
27,500
composite factor = 2
4 × 3 × 5
4 =
30,000
composite factor = 2
3 × 3 × 5
3 × 11 =
33,000
composite factor = 2 × 3 × 5
4 × 11 =
41,250
composite factor = 2
3 × 5
4 × 11 =
55,000
composite factor = 2
4 × 3 × 5
3 × 11 =
66,000
composite factor = 2
2 × 3 × 5
4 × 11 =
82,500
composite factor = 2
4 × 5
4 × 11 =
110,000
composite factor = 2
3 × 3 × 5
4 × 11 =
165,000
composite factor = 2
4 × 3 × 5
4 × 11 =
330,000
100 factors (divisors)
What times what is 330,000?
What number multiplied by what number equals 330,000?
All the combinations of any two natural numbers whose product equals 330,000.
1 × 330,000 = 330,000
2 × 165,000 = 330,000
3 × 110,000 = 330,000
4 × 82,500 = 330,000
5 × 66,000 = 330,000
6 × 55,000 = 330,000
8 × 41,250 = 330,000
10 × 33,000 = 330,000
11 × 30,000 = 330,000
12 × 27,500 = 330,000
15 × 22,000 = 330,000
16 × 20,625 = 330,000
20 × 16,500 = 330,000
22 × 15,000 = 330,000
24 × 13,750 = 330,000
25 × 13,200 = 330,000
30 × 11,000 = 330,000
33 × 10,000 = 330,000
40 × 8,250 = 330,000
44 × 7,500 = 330,000
48 × 6,875 = 330,000
50 × 6,600 = 330,000
55 × 6,000 = 330,000
60 × 5,500 = 330,000
66 × 5,000 = 330,000
75 × 4,400 = 330,000
80 × 4,125 = 330,000
88 × 3,750 = 330,000
100 × 3,300 = 330,000
110 × 3,000 = 330,000
120 × 2,750 = 330,000
125 × 2,640 = 330,000
132 × 2,500 = 330,000
150 × 2,200 = 330,000
165 × 2,000 = 330,000
176 × 1,875 = 330,000
200 × 1,650 = 330,000
220 × 1,500 = 330,000
240 × 1,375 = 330,000
250 × 1,320 = 330,000
264 × 1,250 = 330,000
275 × 1,200 = 330,000
300 × 1,100 = 330,000
330 × 1,000 = 330,000
375 × 880 = 330,000
400 × 825 = 330,000
440 × 750 = 330,000
500 × 660 = 330,000
528 × 625 = 330,000
550 × 600 = 330,000
50 unique multiplications The final answer:
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