To find all the divisors of the number 875,655:
- 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 875,655:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
875,655 = 32 × 5 × 11 × 29 × 61
875,655 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 = (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 875,655
- 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 =
3
prime factor =
5
composite factor = 3
2 =
9
prime factor =
11
composite factor = 3 × 5 =
15
prime factor =
29
composite factor = 3 × 11 =
33
composite factor = 3
2 × 5 =
45
composite factor = 5 × 11 =
55
prime factor =
61
composite factor = 3 × 29 =
87
composite factor = 3
2 × 11 =
99
composite factor = 5 × 29 =
145
composite factor = 3 × 5 × 11 =
165
composite factor = 3 × 61 =
183
composite factor = 3
2 × 29 =
261
composite factor = 5 × 61 =
305
composite factor = 11 × 29 =
319
composite factor = 3 × 5 × 29 =
435
composite factor = 3
2 × 5 × 11 =
495
composite factor = 3
2 × 61 =
549
composite factor = 11 × 61 =
671
composite factor = 3 × 5 × 61 =
915
This list continues below...
... This list continues from above
composite factor = 3 × 11 × 29 =
957
composite factor = 3
2 × 5 × 29 =
1,305
composite factor = 5 × 11 × 29 =
1,595
composite factor = 29 × 61 =
1,769
composite factor = 3 × 11 × 61 =
2,013
composite factor = 3
2 × 5 × 61 =
2,745
composite factor = 3
2 × 11 × 29 =
2,871
composite factor = 5 × 11 × 61 =
3,355
composite factor = 3 × 5 × 11 × 29 =
4,785
composite factor = 3 × 29 × 61 =
5,307
composite factor = 3
2 × 11 × 61 =
6,039
composite factor = 5 × 29 × 61 =
8,845
composite factor = 3 × 5 × 11 × 61 =
10,065
composite factor = 3
2 × 5 × 11 × 29 =
14,355
composite factor = 3
2 × 29 × 61 =
15,921
composite factor = 11 × 29 × 61 =
19,459
composite factor = 3 × 5 × 29 × 61 =
26,535
composite factor = 3
2 × 5 × 11 × 61 =
30,195
composite factor = 3 × 11 × 29 × 61 =
58,377
composite factor = 3
2 × 5 × 29 × 61 =
79,605
composite factor = 5 × 11 × 29 × 61 =
97,295
composite factor = 3
2 × 11 × 29 × 61 =
175,131
composite factor = 3 × 5 × 11 × 29 × 61 =
291,885
composite factor = 3
2 × 5 × 11 × 29 × 61 =
875,655
48 factors (divisors)
What times what is 875,655?
What number multiplied by what number equals 875,655?
All the combinations of any two natural numbers whose product equals 875,655.
1 × 875,655 = 875,655
3 × 291,885 = 875,655
5 × 175,131 = 875,655
9 × 97,295 = 875,655
11 × 79,605 = 875,655
15 × 58,377 = 875,655
29 × 30,195 = 875,655
33 × 26,535 = 875,655
45 × 19,459 = 875,655
55 × 15,921 = 875,655
61 × 14,355 = 875,655
87 × 10,065 = 875,655
99 × 8,845 = 875,655
145 × 6,039 = 875,655
165 × 5,307 = 875,655
183 × 4,785 = 875,655
261 × 3,355 = 875,655
305 × 2,871 = 875,655
319 × 2,745 = 875,655
435 × 2,013 = 875,655
495 × 1,769 = 875,655
549 × 1,595 = 875,655
671 × 1,305 = 875,655
915 × 957 = 875,655
24 unique multiplications The final answer:
(scroll down)