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) × (3 + 1) × (1 + 1) = 4 × 4 × 2 = 32
But to actually calculate the factors, see below...
3. Multiply the prime factors of the 'gcf':
- Multiply the prime factors involved in the prime factorization of the GCF in all their unique combinations, that give different results.
- Also consider the exponents of the prime factors (example: 32 = 3 × 3 = 9).
- 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 instead.
neither prime nor composite =
1
prime factor =
2
composite factor = 2
2 =
4
composite factor = 2
3 =
8
prime factor =
11
composite factor = 2 × 11 =
22
composite factor = 2
2 × 11 =
44
composite factor = 2
3 × 11 =
88
composite factor = 11
2 =
121
composite factor = 2 × 11
2 =
242
composite factor = 2
2 × 11
2 =
484
composite factor = 2
3 × 11
2 =
968
prime factor =
1,217
composite factor = 11
3 =
1,331
composite factor = 2 × 1,217 =
2,434
composite factor = 2 × 11
3 =
2,662
This list continues below...
... This list continues from above
composite factor = 2
2 × 1,217 =
4,868
composite factor = 2
2 × 11
3 =
5,324
composite factor = 2
3 × 1,217 =
9,736
composite factor = 2
3 × 11
3 =
10,648
composite factor = 11 × 1,217 =
13,387
composite factor = 2 × 11 × 1,217 =
26,774
composite factor = 2
2 × 11 × 1,217 =
53,548
composite factor = 2
3 × 11 × 1,217 =
107,096
composite factor = 11
2 × 1,217 =
147,257
composite factor = 2 × 11
2 × 1,217 =
294,514
composite factor = 2
2 × 11
2 × 1,217 =
589,028
composite factor = 2
3 × 11
2 × 1,217 =
1,178,056
composite factor = 11
3 × 1,217 =
1,619,827
composite factor = 2 × 11
3 × 1,217 =
3,239,654
composite factor = 2
2 × 11
3 × 1,217 =
6,479,308
composite factor = 2
3 × 11
3 × 1,217 =
12,958,616
32 common factors (divisors)
What times what is 12,958,616?
What number multiplied by what number equals 12,958,616?
All the combinations of any two natural numbers whose product equals 12,958,616.
1 × 12,958,616 = 12,958,616
2 × 6,479,308 = 12,958,616
4 × 3,239,654 = 12,958,616
8 × 1,619,827 = 12,958,616
11 × 1,178,056 = 12,958,616
22 × 589,028 = 12,958,616
44 × 294,514 = 12,958,616
88 × 147,257 = 12,958,616
121 × 107,096 = 12,958,616
242 × 53,548 = 12,958,616
484 × 26,774 = 12,958,616
968 × 13,387 = 12,958,616
1,217 × 10,648 = 12,958,616
1,331 × 9,736 = 12,958,616
2,434 × 5,324 = 12,958,616
2,662 × 4,868 = 12,958,616
16 unique multiplications