To find all the divisors of the number 424,359:
- 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 424,359:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
424,359 = 34 × 132 × 31
424,359 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 = (4 + 1) × (2 + 1) × (1 + 1) = 5 × 3 × 2 = 30
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 424,359
- 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
composite factor = 3
2 =
9
prime factor =
13
composite factor = 3
3 =
27
prime factor =
31
composite factor = 3 × 13 =
39
composite factor = 3
4 =
81
composite factor = 3 × 31 =
93
composite factor = 3
2 × 13 =
117
composite factor = 13
2 =
169
composite factor = 3
2 × 31 =
279
composite factor = 3
3 × 13 =
351
composite factor = 13 × 31 =
403
composite factor = 3 × 13
2 =
507
This list continues below...
... This list continues from above
composite factor = 3
3 × 31 =
837
composite factor = 3
4 × 13 =
1,053
composite factor = 3 × 13 × 31 =
1,209
composite factor = 3
2 × 13
2 =
1,521
composite factor = 3
4 × 31 =
2,511
composite factor = 3
2 × 13 × 31 =
3,627
composite factor = 3
3 × 13
2 =
4,563
composite factor = 13
2 × 31 =
5,239
composite factor = 3
3 × 13 × 31 =
10,881
composite factor = 3
4 × 13
2 =
13,689
composite factor = 3 × 13
2 × 31 =
15,717
composite factor = 3
4 × 13 × 31 =
32,643
composite factor = 3
2 × 13
2 × 31 =
47,151
composite factor = 3
3 × 13
2 × 31 =
141,453
composite factor = 3
4 × 13
2 × 31 =
424,359
30 factors (divisors)
What times what is 424,359?
What number multiplied by what number equals 424,359?
All the combinations of any two natural numbers whose product equals 424,359.
1 × 424,359 = 424,359
3 × 141,453 = 424,359
9 × 47,151 = 424,359
13 × 32,643 = 424,359
27 × 15,717 = 424,359
31 × 13,689 = 424,359
39 × 10,881 = 424,359
81 × 5,239 = 424,359
93 × 4,563 = 424,359
117 × 3,627 = 424,359
169 × 2,511 = 424,359
279 × 1,521 = 424,359
351 × 1,209 = 424,359
403 × 1,053 = 424,359
507 × 837 = 424,359
15 unique multiplications The final answer:
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