To find all the divisors of the number 875,874:
- 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 875,874:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
875,874 = 2 × 3 × 17 × 31 × 277
875,874 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 875,874
- 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 =
17
prime factor =
31
composite factor = 2 × 17 =
34
composite factor = 3 × 17 =
51
composite factor = 2 × 31 =
62
composite factor = 3 × 31 =
93
composite factor = 2 × 3 × 17 =
102
composite factor = 2 × 3 × 31 =
186
prime factor =
277
composite factor = 17 × 31 =
527
composite factor = 2 × 277 =
554
composite factor = 3 × 277 =
831
This list continues below...
... This list continues from above
composite factor = 2 × 17 × 31 =
1,054
composite factor = 3 × 17 × 31 =
1,581
composite factor = 2 × 3 × 277 =
1,662
composite factor = 2 × 3 × 17 × 31 =
3,162
composite factor = 17 × 277 =
4,709
composite factor = 31 × 277 =
8,587
composite factor = 2 × 17 × 277 =
9,418
composite factor = 3 × 17 × 277 =
14,127
composite factor = 2 × 31 × 277 =
17,174
composite factor = 3 × 31 × 277 =
25,761
composite factor = 2 × 3 × 17 × 277 =
28,254
composite factor = 2 × 3 × 31 × 277 =
51,522
composite factor = 17 × 31 × 277 =
145,979
composite factor = 2 × 17 × 31 × 277 =
291,958
composite factor = 3 × 17 × 31 × 277 =
437,937
composite factor = 2 × 3 × 17 × 31 × 277 =
875,874
32 factors (divisors)
What times what is 875,874?
What number multiplied by what number equals 875,874?
All the combinations of any two natural numbers whose product equals 875,874.
1 × 875,874 = 875,874
2 × 437,937 = 875,874
3 × 291,958 = 875,874
6 × 145,979 = 875,874
17 × 51,522 = 875,874
31 × 28,254 = 875,874
34 × 25,761 = 875,874
51 × 17,174 = 875,874
62 × 14,127 = 875,874
93 × 9,418 = 875,874
102 × 8,587 = 875,874
186 × 4,709 = 875,874
277 × 3,162 = 875,874
527 × 1,662 = 875,874
554 × 1,581 = 875,874
831 × 1,054 = 875,874
16 unique multiplications The final answer:
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