To find all the divisors of the number 16,792,575:
- 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 16,792,575:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
16,792,575 = 3 × 52 × 41 × 43 × 127
16,792,575 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) × (1 + 1) = 2 × 3 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 16,792,575
- 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 × 5 =
15
composite factor = 5
2 =
25
prime factor =
41
prime factor =
43
composite factor = 3 × 5
2 =
75
composite factor = 3 × 41 =
123
prime factor =
127
composite factor = 3 × 43 =
129
composite factor = 5 × 41 =
205
composite factor = 5 × 43 =
215
composite factor = 3 × 127 =
381
composite factor = 3 × 5 × 41 =
615
composite factor = 5 × 127 =
635
composite factor = 3 × 5 × 43 =
645
composite factor = 5
2 × 41 =
1,025
composite factor = 5
2 × 43 =
1,075
composite factor = 41 × 43 =
1,763
composite factor = 3 × 5 × 127 =
1,905
composite factor = 3 × 5
2 × 41 =
3,075
composite factor = 5
2 × 127 =
3,175
composite factor = 3 × 5
2 × 43 =
3,225
This list continues below...
... This list continues from above
composite factor = 41 × 127 =
5,207
composite factor = 3 × 41 × 43 =
5,289
composite factor = 43 × 127 =
5,461
composite factor = 5 × 41 × 43 =
8,815
composite factor = 3 × 5
2 × 127 =
9,525
composite factor = 3 × 41 × 127 =
15,621
composite factor = 3 × 43 × 127 =
16,383
composite factor = 5 × 41 × 127 =
26,035
composite factor = 3 × 5 × 41 × 43 =
26,445
composite factor = 5 × 43 × 127 =
27,305
composite factor = 5
2 × 41 × 43 =
44,075
composite factor = 3 × 5 × 41 × 127 =
78,105
composite factor = 3 × 5 × 43 × 127 =
81,915
composite factor = 5
2 × 41 × 127 =
130,175
composite factor = 3 × 5
2 × 41 × 43 =
132,225
composite factor = 5
2 × 43 × 127 =
136,525
composite factor = 41 × 43 × 127 =
223,901
composite factor = 3 × 5
2 × 41 × 127 =
390,525
composite factor = 3 × 5
2 × 43 × 127 =
409,575
composite factor = 3 × 41 × 43 × 127 =
671,703
composite factor = 5 × 41 × 43 × 127 =
1,119,505
composite factor = 3 × 5 × 41 × 43 × 127 =
3,358,515
composite factor = 5
2 × 41 × 43 × 127 =
5,597,525
composite factor = 3 × 5
2 × 41 × 43 × 127 =
16,792,575
48 factors (divisors)
What times what is 16,792,575?
What number multiplied by what number equals 16,792,575?
All the combinations of any two natural numbers whose product equals 16,792,575.
1 × 16,792,575 = 16,792,575
3 × 5,597,525 = 16,792,575
5 × 3,358,515 = 16,792,575
15 × 1,119,505 = 16,792,575
25 × 671,703 = 16,792,575
41 × 409,575 = 16,792,575
43 × 390,525 = 16,792,575
75 × 223,901 = 16,792,575
123 × 136,525 = 16,792,575
127 × 132,225 = 16,792,575
129 × 130,175 = 16,792,575
205 × 81,915 = 16,792,575
215 × 78,105 = 16,792,575
381 × 44,075 = 16,792,575
615 × 27,305 = 16,792,575
635 × 26,445 = 16,792,575
645 × 26,035 = 16,792,575
1,025 × 16,383 = 16,792,575
1,075 × 15,621 = 16,792,575
1,763 × 9,525 = 16,792,575
1,905 × 8,815 = 16,792,575
3,075 × 5,461 = 16,792,575
3,175 × 5,289 = 16,792,575
3,225 × 5,207 = 16,792,575
24 unique multiplications The final answer:
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