To find all the divisors of the number 568,425:
- 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 568,425:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
568,425 = 3 × 52 × 11 × 13 × 53
568,425 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 568,425
- 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
prime factor =
11
prime factor =
13
composite factor = 3 × 5 =
15
composite factor = 5
2 =
25
composite factor = 3 × 11 =
33
composite factor = 3 × 13 =
39
prime factor =
53
composite factor = 5 × 11 =
55
composite factor = 5 × 13 =
65
composite factor = 3 × 5
2 =
75
composite factor = 11 × 13 =
143
composite factor = 3 × 53 =
159
composite factor = 3 × 5 × 11 =
165
composite factor = 3 × 5 × 13 =
195
composite factor = 5 × 53 =
265
composite factor = 5
2 × 11 =
275
composite factor = 5
2 × 13 =
325
composite factor = 3 × 11 × 13 =
429
composite factor = 11 × 53 =
583
composite factor = 13 × 53 =
689
composite factor = 5 × 11 × 13 =
715
This list continues below...
... This list continues from above
composite factor = 3 × 5 × 53 =
795
composite factor = 3 × 5
2 × 11 =
825
composite factor = 3 × 5
2 × 13 =
975
composite factor = 5
2 × 53 =
1,325
composite factor = 3 × 11 × 53 =
1,749
composite factor = 3 × 13 × 53 =
2,067
composite factor = 3 × 5 × 11 × 13 =
2,145
composite factor = 5 × 11 × 53 =
2,915
composite factor = 5 × 13 × 53 =
3,445
composite factor = 5
2 × 11 × 13 =
3,575
composite factor = 3 × 5
2 × 53 =
3,975
composite factor = 11 × 13 × 53 =
7,579
composite factor = 3 × 5 × 11 × 53 =
8,745
composite factor = 3 × 5 × 13 × 53 =
10,335
composite factor = 3 × 5
2 × 11 × 13 =
10,725
composite factor = 5
2 × 11 × 53 =
14,575
composite factor = 5
2 × 13 × 53 =
17,225
composite factor = 3 × 11 × 13 × 53 =
22,737
composite factor = 5 × 11 × 13 × 53 =
37,895
composite factor = 3 × 5
2 × 11 × 53 =
43,725
composite factor = 3 × 5
2 × 13 × 53 =
51,675
composite factor = 3 × 5 × 11 × 13 × 53 =
113,685
composite factor = 5
2 × 11 × 13 × 53 =
189,475
composite factor = 3 × 5
2 × 11 × 13 × 53 =
568,425
48 factors (divisors)
What times what is 568,425?
What number multiplied by what number equals 568,425?
All the combinations of any two natural numbers whose product equals 568,425.
1 × 568,425 = 568,425
3 × 189,475 = 568,425
5 × 113,685 = 568,425
11 × 51,675 = 568,425
13 × 43,725 = 568,425
15 × 37,895 = 568,425
25 × 22,737 = 568,425
33 × 17,225 = 568,425
39 × 14,575 = 568,425
53 × 10,725 = 568,425
55 × 10,335 = 568,425
65 × 8,745 = 568,425
75 × 7,579 = 568,425
143 × 3,975 = 568,425
159 × 3,575 = 568,425
165 × 3,445 = 568,425
195 × 2,915 = 568,425
265 × 2,145 = 568,425
275 × 2,067 = 568,425
325 × 1,749 = 568,425
429 × 1,325 = 568,425
583 × 975 = 568,425
689 × 825 = 568,425
715 × 795 = 568,425
24 unique multiplications The final answer:
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