To find all the divisors of the number 793,155:
- 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 793,155:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
793,155 = 3 × 5 × 112 × 19 × 23
793,155 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) × (1 + 1) × (2 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 3 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 793,155
- 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
composite factor = 3 × 5 =
15
prime factor =
19
prime factor =
23
composite factor = 3 × 11 =
33
composite factor = 5 × 11 =
55
composite factor = 3 × 19 =
57
composite factor = 3 × 23 =
69
composite factor = 5 × 19 =
95
composite factor = 5 × 23 =
115
composite factor = 11
2 =
121
composite factor = 3 × 5 × 11 =
165
composite factor = 11 × 19 =
209
composite factor = 11 × 23 =
253
composite factor = 3 × 5 × 19 =
285
composite factor = 3 × 5 × 23 =
345
composite factor = 3 × 11
2 =
363
composite factor = 19 × 23 =
437
composite factor = 5 × 11
2 =
605
composite factor = 3 × 11 × 19 =
627
composite factor = 3 × 11 × 23 =
759
This list continues below...
... This list continues from above
composite factor = 5 × 11 × 19 =
1,045
composite factor = 5 × 11 × 23 =
1,265
composite factor = 3 × 19 × 23 =
1,311
composite factor = 3 × 5 × 11
2 =
1,815
composite factor = 5 × 19 × 23 =
2,185
composite factor = 11
2 × 19 =
2,299
composite factor = 11
2 × 23 =
2,783
composite factor = 3 × 5 × 11 × 19 =
3,135
composite factor = 3 × 5 × 11 × 23 =
3,795
composite factor = 11 × 19 × 23 =
4,807
composite factor = 3 × 5 × 19 × 23 =
6,555
composite factor = 3 × 11
2 × 19 =
6,897
composite factor = 3 × 11
2 × 23 =
8,349
composite factor = 5 × 11
2 × 19 =
11,495
composite factor = 5 × 11
2 × 23 =
13,915
composite factor = 3 × 11 × 19 × 23 =
14,421
composite factor = 5 × 11 × 19 × 23 =
24,035
composite factor = 3 × 5 × 11
2 × 19 =
34,485
composite factor = 3 × 5 × 11
2 × 23 =
41,745
composite factor = 11
2 × 19 × 23 =
52,877
composite factor = 3 × 5 × 11 × 19 × 23 =
72,105
composite factor = 3 × 11
2 × 19 × 23 =
158,631
composite factor = 5 × 11
2 × 19 × 23 =
264,385
composite factor = 3 × 5 × 11
2 × 19 × 23 =
793,155
48 factors (divisors)
What times what is 793,155?
What number multiplied by what number equals 793,155?
All the combinations of any two natural numbers whose product equals 793,155.
1 × 793,155 = 793,155
3 × 264,385 = 793,155
5 × 158,631 = 793,155
11 × 72,105 = 793,155
15 × 52,877 = 793,155
19 × 41,745 = 793,155
23 × 34,485 = 793,155
33 × 24,035 = 793,155
55 × 14,421 = 793,155
57 × 13,915 = 793,155
69 × 11,495 = 793,155
95 × 8,349 = 793,155
115 × 6,897 = 793,155
121 × 6,555 = 793,155
165 × 4,807 = 793,155
209 × 3,795 = 793,155
253 × 3,135 = 793,155
285 × 2,783 = 793,155
345 × 2,299 = 793,155
363 × 2,185 = 793,155
437 × 1,815 = 793,155
605 × 1,311 = 793,155
627 × 1,265 = 793,155
759 × 1,045 = 793,155
24 unique multiplications The final answer:
(scroll down)