To find all the divisors of the number 876,584:
- 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 876,584:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
876,584 = 23 × 19 × 73 × 79
876,584 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 = (3 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 4 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 876,584
- 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
composite factor = 2
2 =
4
composite factor = 2
3 =
8
prime factor =
19
composite factor = 2 × 19 =
38
prime factor =
73
composite factor = 2
2 × 19 =
76
prime factor =
79
composite factor = 2 × 73 =
146
composite factor = 2
3 × 19 =
152
composite factor = 2 × 79 =
158
composite factor = 2
2 × 73 =
292
composite factor = 2
2 × 79 =
316
composite factor = 2
3 × 73 =
584
composite factor = 2
3 × 79 =
632
This list continues below...
... This list continues from above
composite factor = 19 × 73 =
1,387
composite factor = 19 × 79 =
1,501
composite factor = 2 × 19 × 73 =
2,774
composite factor = 2 × 19 × 79 =
3,002
composite factor = 2
2 × 19 × 73 =
5,548
composite factor = 73 × 79 =
5,767
composite factor = 2
2 × 19 × 79 =
6,004
composite factor = 2
3 × 19 × 73 =
11,096
composite factor = 2 × 73 × 79 =
11,534
composite factor = 2
3 × 19 × 79 =
12,008
composite factor = 2
2 × 73 × 79 =
23,068
composite factor = 2
3 × 73 × 79 =
46,136
composite factor = 19 × 73 × 79 =
109,573
composite factor = 2 × 19 × 73 × 79 =
219,146
composite factor = 2
2 × 19 × 73 × 79 =
438,292
composite factor = 2
3 × 19 × 73 × 79 =
876,584
32 factors (divisors)
What times what is 876,584?
What number multiplied by what number equals 876,584?
All the combinations of any two natural numbers whose product equals 876,584.
1 × 876,584 = 876,584
2 × 438,292 = 876,584
4 × 219,146 = 876,584
8 × 109,573 = 876,584
19 × 46,136 = 876,584
38 × 23,068 = 876,584
73 × 12,008 = 876,584
76 × 11,534 = 876,584
79 × 11,096 = 876,584
146 × 6,004 = 876,584
152 × 5,767 = 876,584
158 × 5,548 = 876,584
292 × 3,002 = 876,584
316 × 2,774 = 876,584
584 × 1,501 = 876,584
632 × 1,387 = 876,584
16 unique multiplications The final answer:
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