To find all the divisors of the number 33,759,535:
- 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 33,759,535:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
33,759,535 = 5 × 172 × 61 × 383
33,759,535 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) = 2 × 3 × 2 × 2 = 24
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 33,759,535
- 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 =
5
prime factor =
17
prime factor =
61
composite factor = 5 × 17 =
85
composite factor = 17
2 =
289
composite factor = 5 × 61 =
305
prime factor =
383
composite factor = 17 × 61 =
1,037
composite factor = 5 × 17
2 =
1,445
composite factor = 5 × 383 =
1,915
composite factor = 5 × 17 × 61 =
5,185
This list continues below...
... This list continues from above
composite factor = 17 × 383 =
6,511
composite factor = 17
2 × 61 =
17,629
composite factor = 61 × 383 =
23,363
composite factor = 5 × 17 × 383 =
32,555
composite factor = 5 × 17
2 × 61 =
88,145
composite factor = 17
2 × 383 =
110,687
composite factor = 5 × 61 × 383 =
116,815
composite factor = 17 × 61 × 383 =
397,171
composite factor = 5 × 17
2 × 383 =
553,435
composite factor = 5 × 17 × 61 × 383 =
1,985,855
composite factor = 17
2 × 61 × 383 =
6,751,907
composite factor = 5 × 17
2 × 61 × 383 =
33,759,535
24 factors (divisors)
What times what is 33,759,535?
What number multiplied by what number equals 33,759,535?
All the combinations of any two natural numbers whose product equals 33,759,535.
1 × 33,759,535 = 33,759,535
5 × 6,751,907 = 33,759,535
17 × 1,985,855 = 33,759,535
61 × 553,435 = 33,759,535
85 × 397,171 = 33,759,535
289 × 116,815 = 33,759,535
305 × 110,687 = 33,759,535
383 × 88,145 = 33,759,535
1,037 × 32,555 = 33,759,535
1,445 × 23,363 = 33,759,535
1,915 × 17,629 = 33,759,535
5,185 × 6,511 = 33,759,535
12 unique multiplications The final answer:
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