To find all the divisors of the number 322,000:
- 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 322,000:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
322,000 = 24 × 53 × 7 × 23
322,000 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) × (3 + 1) × (1 + 1) × (1 + 1) = 5 × 4 × 2 × 2 = 80
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 322,000
- 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
composite factor = 2
2 =
4
prime factor =
5
prime factor =
7
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
composite factor = 2 × 7 =
14
composite factor = 2
4 =
16
composite factor = 2
2 × 5 =
20
prime factor =
23
composite factor = 5
2 =
25
composite factor = 2
2 × 7 =
28
composite factor = 5 × 7 =
35
composite factor = 2
3 × 5 =
40
composite factor = 2 × 23 =
46
composite factor = 2 × 5
2 =
50
composite factor = 2
3 × 7 =
56
composite factor = 2 × 5 × 7 =
70
composite factor = 2
4 × 5 =
80
composite factor = 2
2 × 23 =
92
composite factor = 2
2 × 5
2 =
100
composite factor = 2
4 × 7 =
112
composite factor = 5 × 23 =
115
composite factor = 5
3 =
125
composite factor = 2
2 × 5 × 7 =
140
composite factor = 7 × 23 =
161
composite factor = 5
2 × 7 =
175
composite factor = 2
3 × 23 =
184
composite factor = 2
3 × 5
2 =
200
composite factor = 2 × 5 × 23 =
230
composite factor = 2 × 5
3 =
250
composite factor = 2
3 × 5 × 7 =
280
composite factor = 2 × 7 × 23 =
322
composite factor = 2 × 5
2 × 7 =
350
composite factor = 2
4 × 23 =
368
composite factor = 2
4 × 5
2 =
400
composite factor = 2
2 × 5 × 23 =
460
composite factor = 2
2 × 5
3 =
500
composite factor = 2
4 × 5 × 7 =
560
This list continues below...
... This list continues from above
composite factor = 5
2 × 23 =
575
composite factor = 2
2 × 7 × 23 =
644
composite factor = 2
2 × 5
2 × 7 =
700
composite factor = 5 × 7 × 23 =
805
composite factor = 5
3 × 7 =
875
composite factor = 2
3 × 5 × 23 =
920
composite factor = 2
3 × 5
3 =
1,000
composite factor = 2 × 5
2 × 23 =
1,150
composite factor = 2
3 × 7 × 23 =
1,288
composite factor = 2
3 × 5
2 × 7 =
1,400
composite factor = 2 × 5 × 7 × 23 =
1,610
composite factor = 2 × 5
3 × 7 =
1,750
composite factor = 2
4 × 5 × 23 =
1,840
composite factor = 2
4 × 5
3 =
2,000
composite factor = 2
2 × 5
2 × 23 =
2,300
composite factor = 2
4 × 7 × 23 =
2,576
composite factor = 2
4 × 5
2 × 7 =
2,800
composite factor = 5
3 × 23 =
2,875
composite factor = 2
2 × 5 × 7 × 23 =
3,220
composite factor = 2
2 × 5
3 × 7 =
3,500
composite factor = 5
2 × 7 × 23 =
4,025
composite factor = 2
3 × 5
2 × 23 =
4,600
composite factor = 2 × 5
3 × 23 =
5,750
composite factor = 2
3 × 5 × 7 × 23 =
6,440
composite factor = 2
3 × 5
3 × 7 =
7,000
composite factor = 2 × 5
2 × 7 × 23 =
8,050
composite factor = 2
4 × 5
2 × 23 =
9,200
composite factor = 2
2 × 5
3 × 23 =
11,500
composite factor = 2
4 × 5 × 7 × 23 =
12,880
composite factor = 2
4 × 5
3 × 7 =
14,000
composite factor = 2
2 × 5
2 × 7 × 23 =
16,100
composite factor = 5
3 × 7 × 23 =
20,125
composite factor = 2
3 × 5
3 × 23 =
23,000
composite factor = 2
3 × 5
2 × 7 × 23 =
32,200
composite factor = 2 × 5
3 × 7 × 23 =
40,250
composite factor = 2
4 × 5
3 × 23 =
46,000
composite factor = 2
4 × 5
2 × 7 × 23 =
64,400
composite factor = 2
2 × 5
3 × 7 × 23 =
80,500
composite factor = 2
3 × 5
3 × 7 × 23 =
161,000
composite factor = 2
4 × 5
3 × 7 × 23 =
322,000
80 factors (divisors)
What times what is 322,000?
What number multiplied by what number equals 322,000?
All the combinations of any two natural numbers whose product equals 322,000.
1 × 322,000 = 322,000
2 × 161,000 = 322,000
4 × 80,500 = 322,000
5 × 64,400 = 322,000
7 × 46,000 = 322,000
8 × 40,250 = 322,000
10 × 32,200 = 322,000
14 × 23,000 = 322,000
16 × 20,125 = 322,000
20 × 16,100 = 322,000
23 × 14,000 = 322,000
25 × 12,880 = 322,000
28 × 11,500 = 322,000
35 × 9,200 = 322,000
40 × 8,050 = 322,000
46 × 7,000 = 322,000
50 × 6,440 = 322,000
56 × 5,750 = 322,000
70 × 4,600 = 322,000
80 × 4,025 = 322,000
92 × 3,500 = 322,000
100 × 3,220 = 322,000
112 × 2,875 = 322,000
115 × 2,800 = 322,000
125 × 2,576 = 322,000
140 × 2,300 = 322,000
161 × 2,000 = 322,000
175 × 1,840 = 322,000
184 × 1,750 = 322,000
200 × 1,610 = 322,000
230 × 1,400 = 322,000
250 × 1,288 = 322,000
280 × 1,150 = 322,000
322 × 1,000 = 322,000
350 × 920 = 322,000
368 × 875 = 322,000
400 × 805 = 322,000
460 × 700 = 322,000
500 × 644 = 322,000
560 × 575 = 322,000
40 unique multiplications The final answer:
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