To find all the divisors of the number 357,466,072:
- 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 357,466,072:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
357,466,072 = 23 × 17 × 211 × 12,457
357,466,072 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 = (3 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 4 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 357,466,072
- 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
composite factor = 2
3 =
8
prime factor =
17
composite factor = 2 × 17 =
34
composite factor = 2
2 × 17 =
68
composite factor = 2
3 × 17 =
136
prime factor =
211
composite factor = 2 × 211 =
422
composite factor = 2
2 × 211 =
844
composite factor = 2
3 × 211 =
1,688
composite factor = 17 × 211 =
3,587
composite factor = 2 × 17 × 211 =
7,174
prime factor =
12,457
composite factor = 2
2 × 17 × 211 =
14,348
This list continues below...
... This list continues from above
composite factor = 2 × 12,457 =
24,914
composite factor = 2
3 × 17 × 211 =
28,696
composite factor = 2
2 × 12,457 =
49,828
composite factor = 2
3 × 12,457 =
99,656
composite factor = 17 × 12,457 =
211,769
composite factor = 2 × 17 × 12,457 =
423,538
composite factor = 2
2 × 17 × 12,457 =
847,076
composite factor = 2
3 × 17 × 12,457 =
1,694,152
composite factor = 211 × 12,457 =
2,628,427
composite factor = 2 × 211 × 12,457 =
5,256,854
composite factor = 2
2 × 211 × 12,457 =
10,513,708
composite factor = 2
3 × 211 × 12,457 =
21,027,416
composite factor = 17 × 211 × 12,457 =
44,683,259
composite factor = 2 × 17 × 211 × 12,457 =
89,366,518
composite factor = 2
2 × 17 × 211 × 12,457 =
178,733,036
composite factor = 2
3 × 17 × 211 × 12,457 =
357,466,072
32 factors (divisors)
What times what is 357,466,072?
What number multiplied by what number equals 357,466,072?
All the combinations of any two natural numbers whose product equals 357,466,072.
1 × 357,466,072 = 357,466,072
2 × 178,733,036 = 357,466,072
4 × 89,366,518 = 357,466,072
8 × 44,683,259 = 357,466,072
17 × 21,027,416 = 357,466,072
34 × 10,513,708 = 357,466,072
68 × 5,256,854 = 357,466,072
136 × 2,628,427 = 357,466,072
211 × 1,694,152 = 357,466,072
422 × 847,076 = 357,466,072
844 × 423,538 = 357,466,072
1,688 × 211,769 = 357,466,072
3,587 × 99,656 = 357,466,072
7,174 × 49,828 = 357,466,072
12,457 × 28,696 = 357,466,072
14,348 × 24,914 = 357,466,072
16 unique multiplications The final answer:
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