To find all the divisors of the number 71,369,736:
- 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 71,369,736:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
71,369,736 = 23 × 3 × 23 × 129,293
71,369,736 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 71,369,736
- 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
composite factor = 2 × 3 =
6
composite factor = 2
3 =
8
composite factor = 2
2 × 3 =
12
prime factor =
23
composite factor = 2
3 × 3 =
24
composite factor = 2 × 23 =
46
composite factor = 3 × 23 =
69
composite factor = 2
2 × 23 =
92
composite factor = 2 × 3 × 23 =
138
composite factor = 2
3 × 23 =
184
composite factor = 2
2 × 3 × 23 =
276
composite factor = 2
3 × 3 × 23 =
552
This list continues below...
... This list continues from above
prime factor =
129,293
composite factor = 2 × 129,293 =
258,586
composite factor = 3 × 129,293 =
387,879
composite factor = 2
2 × 129,293 =
517,172
composite factor = 2 × 3 × 129,293 =
775,758
composite factor = 2
3 × 129,293 =
1,034,344
composite factor = 2
2 × 3 × 129,293 =
1,551,516
composite factor = 23 × 129,293 =
2,973,739
composite factor = 2
3 × 3 × 129,293 =
3,103,032
composite factor = 2 × 23 × 129,293 =
5,947,478
composite factor = 3 × 23 × 129,293 =
8,921,217
composite factor = 2
2 × 23 × 129,293 =
11,894,956
composite factor = 2 × 3 × 23 × 129,293 =
17,842,434
composite factor = 2
3 × 23 × 129,293 =
23,789,912
composite factor = 2
2 × 3 × 23 × 129,293 =
35,684,868
composite factor = 2
3 × 3 × 23 × 129,293 =
71,369,736
32 factors (divisors)
What times what is 71,369,736?
What number multiplied by what number equals 71,369,736?
All the combinations of any two natural numbers whose product equals 71,369,736.
1 × 71,369,736 = 71,369,736
2 × 35,684,868 = 71,369,736
3 × 23,789,912 = 71,369,736
4 × 17,842,434 = 71,369,736
6 × 11,894,956 = 71,369,736
8 × 8,921,217 = 71,369,736
12 × 5,947,478 = 71,369,736
23 × 3,103,032 = 71,369,736
24 × 2,973,739 = 71,369,736
46 × 1,551,516 = 71,369,736
69 × 1,034,344 = 71,369,736
92 × 775,758 = 71,369,736
138 × 517,172 = 71,369,736
184 × 387,879 = 71,369,736
276 × 258,586 = 71,369,736
552 × 129,293 = 71,369,736
16 unique multiplications The final answer:
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