To find all the divisors of the number 875,826:
- 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 875,826:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
875,826 = 2 × 33 × 72 × 331
875,826 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) × (3 + 1) × (2 + 1) × (1 + 1) = 2 × 4 × 3 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 875,826
- 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 × 3 =
6
prime factor =
7
composite factor = 3
2 =
9
composite factor = 2 × 7 =
14
composite factor = 2 × 3
2 =
18
composite factor = 3 × 7 =
21
composite factor = 3
3 =
27
composite factor = 2 × 3 × 7 =
42
composite factor = 7
2 =
49
composite factor = 2 × 3
3 =
54
composite factor = 3
2 × 7 =
63
composite factor = 2 × 7
2 =
98
composite factor = 2 × 3
2 × 7 =
126
composite factor = 3 × 7
2 =
147
composite factor = 3
3 × 7 =
189
composite factor = 2 × 3 × 7
2 =
294
prime factor =
331
composite factor = 2 × 3
3 × 7 =
378
composite factor = 3
2 × 7
2 =
441
composite factor = 2 × 331 =
662
composite factor = 2 × 3
2 × 7
2 =
882
This list continues below...
... This list continues from above
composite factor = 3 × 331 =
993
composite factor = 3
3 × 7
2 =
1,323
composite factor = 2 × 3 × 331 =
1,986
composite factor = 7 × 331 =
2,317
composite factor = 2 × 3
3 × 7
2 =
2,646
composite factor = 3
2 × 331 =
2,979
composite factor = 2 × 7 × 331 =
4,634
composite factor = 2 × 3
2 × 331 =
5,958
composite factor = 3 × 7 × 331 =
6,951
composite factor = 3
3 × 331 =
8,937
composite factor = 2 × 3 × 7 × 331 =
13,902
composite factor = 7
2 × 331 =
16,219
composite factor = 2 × 3
3 × 331 =
17,874
composite factor = 3
2 × 7 × 331 =
20,853
composite factor = 2 × 7
2 × 331 =
32,438
composite factor = 2 × 3
2 × 7 × 331 =
41,706
composite factor = 3 × 7
2 × 331 =
48,657
composite factor = 3
3 × 7 × 331 =
62,559
composite factor = 2 × 3 × 7
2 × 331 =
97,314
composite factor = 2 × 3
3 × 7 × 331 =
125,118
composite factor = 3
2 × 7
2 × 331 =
145,971
composite factor = 2 × 3
2 × 7
2 × 331 =
291,942
composite factor = 3
3 × 7
2 × 331 =
437,913
composite factor = 2 × 3
3 × 7
2 × 331 =
875,826
48 factors (divisors)
What times what is 875,826?
What number multiplied by what number equals 875,826?
All the combinations of any two natural numbers whose product equals 875,826.
1 × 875,826 = 875,826
2 × 437,913 = 875,826
3 × 291,942 = 875,826
6 × 145,971 = 875,826
7 × 125,118 = 875,826
9 × 97,314 = 875,826
14 × 62,559 = 875,826
18 × 48,657 = 875,826
21 × 41,706 = 875,826
27 × 32,438 = 875,826
42 × 20,853 = 875,826
49 × 17,874 = 875,826
54 × 16,219 = 875,826
63 × 13,902 = 875,826
98 × 8,937 = 875,826
126 × 6,951 = 875,826
147 × 5,958 = 875,826
189 × 4,634 = 875,826
294 × 2,979 = 875,826
331 × 2,646 = 875,826
378 × 2,317 = 875,826
441 × 1,986 = 875,826
662 × 1,323 = 875,826
882 × 993 = 875,826
24 unique multiplications The final answer:
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