To find all the divisors of the number 16,425,324:
- 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 16,425,324:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
16,425,324 = 22 × 32 × 467 × 977
16,425,324 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 = (2 + 1) × (2 + 1) × (1 + 1) × (1 + 1) = 3 × 3 × 2 × 2 = 36
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 16,425,324
- 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
2 =
4
composite factor = 2 × 3 =
6
composite factor = 3
2 =
9
composite factor = 2
2 × 3 =
12
composite factor = 2 × 3
2 =
18
composite factor = 2
2 × 3
2 =
36
prime factor =
467
composite factor = 2 × 467 =
934
prime factor =
977
composite factor = 3 × 467 =
1,401
composite factor = 2
2 × 467 =
1,868
composite factor = 2 × 977 =
1,954
composite factor = 2 × 3 × 467 =
2,802
composite factor = 3 × 977 =
2,931
composite factor = 2
2 × 977 =
3,908
This list continues below...
... This list continues from above
composite factor = 3
2 × 467 =
4,203
composite factor = 2
2 × 3 × 467 =
5,604
composite factor = 2 × 3 × 977 =
5,862
composite factor = 2 × 3
2 × 467 =
8,406
composite factor = 3
2 × 977 =
8,793
composite factor = 2
2 × 3 × 977 =
11,724
composite factor = 2
2 × 3
2 × 467 =
16,812
composite factor = 2 × 3
2 × 977 =
17,586
composite factor = 2
2 × 3
2 × 977 =
35,172
composite factor = 467 × 977 =
456,259
composite factor = 2 × 467 × 977 =
912,518
composite factor = 3 × 467 × 977 =
1,368,777
composite factor = 2
2 × 467 × 977 =
1,825,036
composite factor = 2 × 3 × 467 × 977 =
2,737,554
composite factor = 3
2 × 467 × 977 =
4,106,331
composite factor = 2
2 × 3 × 467 × 977 =
5,475,108
composite factor = 2 × 3
2 × 467 × 977 =
8,212,662
composite factor = 2
2 × 3
2 × 467 × 977 =
16,425,324
36 factors (divisors)
What times what is 16,425,324?
What number multiplied by what number equals 16,425,324?
All the combinations of any two natural numbers whose product equals 16,425,324.
1 × 16,425,324 = 16,425,324
2 × 8,212,662 = 16,425,324
3 × 5,475,108 = 16,425,324
4 × 4,106,331 = 16,425,324
6 × 2,737,554 = 16,425,324
9 × 1,825,036 = 16,425,324
12 × 1,368,777 = 16,425,324
18 × 912,518 = 16,425,324
36 × 456,259 = 16,425,324
467 × 35,172 = 16,425,324
934 × 17,586 = 16,425,324
977 × 16,812 = 16,425,324
1,401 × 11,724 = 16,425,324
1,868 × 8,793 = 16,425,324
1,954 × 8,406 = 16,425,324
2,802 × 5,862 = 16,425,324
2,931 × 5,604 = 16,425,324
3,908 × 4,203 = 16,425,324
18 unique multiplications The final answer:
(scroll down)