To find all the divisors of the number 71,368,674:
- 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 71,368,674:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
71,368,674 = 2 × 3 × 13 × 19 × 48,157
71,368,674 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 = (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 71,368,674
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- 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 × 3 =
6
prime factor =
13
prime factor =
19
composite factor = 2 × 13 =
26
composite factor = 2 × 19 =
38
composite factor = 3 × 13 =
39
composite factor = 3 × 19 =
57
composite factor = 2 × 3 × 13 =
78
composite factor = 2 × 3 × 19 =
114
composite factor = 13 × 19 =
247
composite factor = 2 × 13 × 19 =
494
composite factor = 3 × 13 × 19 =
741
composite factor = 2 × 3 × 13 × 19 =
1,482
This list continues below...
... This list continues from above
prime factor =
48,157
composite factor = 2 × 48,157 =
96,314
composite factor = 3 × 48,157 =
144,471
composite factor = 2 × 3 × 48,157 =
288,942
composite factor = 13 × 48,157 =
626,041
composite factor = 19 × 48,157 =
914,983
composite factor = 2 × 13 × 48,157 =
1,252,082
composite factor = 2 × 19 × 48,157 =
1,829,966
composite factor = 3 × 13 × 48,157 =
1,878,123
composite factor = 3 × 19 × 48,157 =
2,744,949
composite factor = 2 × 3 × 13 × 48,157 =
3,756,246
composite factor = 2 × 3 × 19 × 48,157 =
5,489,898
composite factor = 13 × 19 × 48,157 =
11,894,779
composite factor = 2 × 13 × 19 × 48,157 =
23,789,558
composite factor = 3 × 13 × 19 × 48,157 =
35,684,337
composite factor = 2 × 3 × 13 × 19 × 48,157 =
71,368,674
32 factors (divisors)
What times what is 71,368,674?
What number multiplied by what number equals 71,368,674?
All the combinations of any two natural numbers whose product equals 71,368,674.
1 × 71,368,674 = 71,368,674
2 × 35,684,337 = 71,368,674
3 × 23,789,558 = 71,368,674
6 × 11,894,779 = 71,368,674
13 × 5,489,898 = 71,368,674
19 × 3,756,246 = 71,368,674
26 × 2,744,949 = 71,368,674
38 × 1,878,123 = 71,368,674
39 × 1,829,966 = 71,368,674
57 × 1,252,082 = 71,368,674
78 × 914,983 = 71,368,674
114 × 626,041 = 71,368,674
247 × 288,942 = 71,368,674
494 × 144,471 = 71,368,674
741 × 96,314 = 71,368,674
1,482 × 48,157 = 71,368,674
16 unique multiplications The final answer:
(scroll down)