To find all the divisors of the number 310,893,655:
- 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 310,893,655:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
310,893,655 = 5 × 43 × 101 × 103 × 139
310,893,655 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 310,893,655
- 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 =
5
prime factor =
43
prime factor =
101
prime factor =
103
prime factor =
139
composite factor = 5 × 43 =
215
composite factor = 5 × 101 =
505
composite factor = 5 × 103 =
515
composite factor = 5 × 139 =
695
composite factor = 43 × 101 =
4,343
composite factor = 43 × 103 =
4,429
composite factor = 43 × 139 =
5,977
composite factor = 101 × 103 =
10,403
composite factor = 101 × 139 =
14,039
composite factor = 103 × 139 =
14,317
This list continues below...
... This list continues from above
composite factor = 5 × 43 × 101 =
21,715
composite factor = 5 × 43 × 103 =
22,145
composite factor = 5 × 43 × 139 =
29,885
composite factor = 5 × 101 × 103 =
52,015
composite factor = 5 × 101 × 139 =
70,195
composite factor = 5 × 103 × 139 =
71,585
composite factor = 43 × 101 × 103 =
447,329
composite factor = 43 × 101 × 139 =
603,677
composite factor = 43 × 103 × 139 =
615,631
composite factor = 101 × 103 × 139 =
1,446,017
composite factor = 5 × 43 × 101 × 103 =
2,236,645
composite factor = 5 × 43 × 101 × 139 =
3,018,385
composite factor = 5 × 43 × 103 × 139 =
3,078,155
composite factor = 5 × 101 × 103 × 139 =
7,230,085
composite factor = 43 × 101 × 103 × 139 =
62,178,731
composite factor = 5 × 43 × 101 × 103 × 139 =
310,893,655
32 factors (divisors)
What times what is 310,893,655?
What number multiplied by what number equals 310,893,655?
All the combinations of any two natural numbers whose product equals 310,893,655.
1 × 310,893,655 = 310,893,655
5 × 62,178,731 = 310,893,655
43 × 7,230,085 = 310,893,655
101 × 3,078,155 = 310,893,655
103 × 3,018,385 = 310,893,655
139 × 2,236,645 = 310,893,655
215 × 1,446,017 = 310,893,655
505 × 615,631 = 310,893,655
515 × 603,677 = 310,893,655
695 × 447,329 = 310,893,655
4,343 × 71,585 = 310,893,655
4,429 × 70,195 = 310,893,655
5,977 × 52,015 = 310,893,655
10,403 × 29,885 = 310,893,655
14,039 × 22,145 = 310,893,655
14,317 × 21,715 = 310,893,655
16 unique multiplications The final answer:
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