To find all the divisors of the number 579,870:
- 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 579,870:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
579,870 = 2 × 32 × 5 × 17 × 379
579,870 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) × (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 3 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 579,870
- 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
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 3
2 =
9
composite factor = 2 × 5 =
10
composite factor = 3 × 5 =
15
prime factor =
17
composite factor = 2 × 3
2 =
18
composite factor = 2 × 3 × 5 =
30
composite factor = 2 × 17 =
34
composite factor = 3
2 × 5 =
45
composite factor = 3 × 17 =
51
composite factor = 5 × 17 =
85
composite factor = 2 × 3
2 × 5 =
90
composite factor = 2 × 3 × 17 =
102
composite factor = 3
2 × 17 =
153
composite factor = 2 × 5 × 17 =
170
composite factor = 3 × 5 × 17 =
255
composite factor = 2 × 3
2 × 17 =
306
prime factor =
379
composite factor = 2 × 3 × 5 × 17 =
510
composite factor = 2 × 379 =
758
This list continues below...
... This list continues from above
composite factor = 3
2 × 5 × 17 =
765
composite factor = 3 × 379 =
1,137
composite factor = 2 × 3
2 × 5 × 17 =
1,530
composite factor = 5 × 379 =
1,895
composite factor = 2 × 3 × 379 =
2,274
composite factor = 3
2 × 379 =
3,411
composite factor = 2 × 5 × 379 =
3,790
composite factor = 3 × 5 × 379 =
5,685
composite factor = 17 × 379 =
6,443
composite factor = 2 × 3
2 × 379 =
6,822
composite factor = 2 × 3 × 5 × 379 =
11,370
composite factor = 2 × 17 × 379 =
12,886
composite factor = 3
2 × 5 × 379 =
17,055
composite factor = 3 × 17 × 379 =
19,329
composite factor = 5 × 17 × 379 =
32,215
composite factor = 2 × 3
2 × 5 × 379 =
34,110
composite factor = 2 × 3 × 17 × 379 =
38,658
composite factor = 3
2 × 17 × 379 =
57,987
composite factor = 2 × 5 × 17 × 379 =
64,430
composite factor = 3 × 5 × 17 × 379 =
96,645
composite factor = 2 × 3
2 × 17 × 379 =
115,974
composite factor = 2 × 3 × 5 × 17 × 379 =
193,290
composite factor = 3
2 × 5 × 17 × 379 =
289,935
composite factor = 2 × 3
2 × 5 × 17 × 379 =
579,870
48 factors (divisors)
What times what is 579,870?
What number multiplied by what number equals 579,870?
All the combinations of any two natural numbers whose product equals 579,870.
1 × 579,870 = 579,870
2 × 289,935 = 579,870
3 × 193,290 = 579,870
5 × 115,974 = 579,870
6 × 96,645 = 579,870
9 × 64,430 = 579,870
10 × 57,987 = 579,870
15 × 38,658 = 579,870
17 × 34,110 = 579,870
18 × 32,215 = 579,870
30 × 19,329 = 579,870
34 × 17,055 = 579,870
45 × 12,886 = 579,870
51 × 11,370 = 579,870
85 × 6,822 = 579,870
90 × 6,443 = 579,870
102 × 5,685 = 579,870
153 × 3,790 = 579,870
170 × 3,411 = 579,870
255 × 2,274 = 579,870
306 × 1,895 = 579,870
379 × 1,530 = 579,870
510 × 1,137 = 579,870
758 × 765 = 579,870
24 unique multiplications The final answer:
(scroll down)