To find all the divisors of the number 324,675:
- 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 324,675:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
324,675 = 33 × 52 × 13 × 37
324,675 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) × (2 + 1) × (1 + 1) × (1 + 1) = 4 × 3 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 324,675
- 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
composite factor = 3
2 =
9
prime factor =
13
composite factor = 3 × 5 =
15
composite factor = 5
2 =
25
composite factor = 3
3 =
27
prime factor =
37
composite factor = 3 × 13 =
39
composite factor = 3
2 × 5 =
45
composite factor = 5 × 13 =
65
composite factor = 3 × 5
2 =
75
composite factor = 3 × 37 =
111
composite factor = 3
2 × 13 =
117
composite factor = 3
3 × 5 =
135
composite factor = 5 × 37 =
185
composite factor = 3 × 5 × 13 =
195
composite factor = 3
2 × 5
2 =
225
composite factor = 5
2 × 13 =
325
composite factor = 3
2 × 37 =
333
composite factor = 3
3 × 13 =
351
composite factor = 13 × 37 =
481
composite factor = 3 × 5 × 37 =
555
This list continues below...
... This list continues from above
composite factor = 3
2 × 5 × 13 =
585
composite factor = 3
3 × 5
2 =
675
composite factor = 5
2 × 37 =
925
composite factor = 3 × 5
2 × 13 =
975
composite factor = 3
3 × 37 =
999
composite factor = 3 × 13 × 37 =
1,443
composite factor = 3
2 × 5 × 37 =
1,665
composite factor = 3
3 × 5 × 13 =
1,755
composite factor = 5 × 13 × 37 =
2,405
composite factor = 3 × 5
2 × 37 =
2,775
composite factor = 3
2 × 5
2 × 13 =
2,925
composite factor = 3
2 × 13 × 37 =
4,329
composite factor = 3
3 × 5 × 37 =
4,995
composite factor = 3 × 5 × 13 × 37 =
7,215
composite factor = 3
2 × 5
2 × 37 =
8,325
composite factor = 3
3 × 5
2 × 13 =
8,775
composite factor = 5
2 × 13 × 37 =
12,025
composite factor = 3
3 × 13 × 37 =
12,987
composite factor = 3
2 × 5 × 13 × 37 =
21,645
composite factor = 3
3 × 5
2 × 37 =
24,975
composite factor = 3 × 5
2 × 13 × 37 =
36,075
composite factor = 3
3 × 5 × 13 × 37 =
64,935
composite factor = 3
2 × 5
2 × 13 × 37 =
108,225
composite factor = 3
3 × 5
2 × 13 × 37 =
324,675
48 factors (divisors)
What times what is 324,675?
What number multiplied by what number equals 324,675?
All the combinations of any two natural numbers whose product equals 324,675.
1 × 324,675 = 324,675
3 × 108,225 = 324,675
5 × 64,935 = 324,675
9 × 36,075 = 324,675
13 × 24,975 = 324,675
15 × 21,645 = 324,675
25 × 12,987 = 324,675
27 × 12,025 = 324,675
37 × 8,775 = 324,675
39 × 8,325 = 324,675
45 × 7,215 = 324,675
65 × 4,995 = 324,675
75 × 4,329 = 324,675
111 × 2,925 = 324,675
117 × 2,775 = 324,675
135 × 2,405 = 324,675
185 × 1,755 = 324,675
195 × 1,665 = 324,675
225 × 1,443 = 324,675
325 × 999 = 324,675
333 × 975 = 324,675
351 × 925 = 324,675
481 × 675 = 324,675
555 × 585 = 324,675
24 unique multiplications The final answer:
(scroll down)