To find all the divisors of the number 107,053,578:
- 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 107,053,578:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
107,053,578 = 2 × 32 × 389 × 15,289
107,053,578 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 107,053,578
- 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 × 3 =
6
composite factor = 3
2 =
9
composite factor = 2 × 3
2 =
18
prime factor =
389
composite factor = 2 × 389 =
778
composite factor = 3 × 389 =
1,167
composite factor = 2 × 3 × 389 =
2,334
composite factor = 3
2 × 389 =
3,501
composite factor = 2 × 3
2 × 389 =
7,002
This list continues below...
... This list continues from above
prime factor =
15,289
composite factor = 2 × 15,289 =
30,578
composite factor = 3 × 15,289 =
45,867
composite factor = 2 × 3 × 15,289 =
91,734
composite factor = 3
2 × 15,289 =
137,601
composite factor = 2 × 3
2 × 15,289 =
275,202
composite factor = 389 × 15,289 =
5,947,421
composite factor = 2 × 389 × 15,289 =
11,894,842
composite factor = 3 × 389 × 15,289 =
17,842,263
composite factor = 2 × 3 × 389 × 15,289 =
35,684,526
composite factor = 3
2 × 389 × 15,289 =
53,526,789
composite factor = 2 × 3
2 × 389 × 15,289 =
107,053,578
24 factors (divisors)
What times what is 107,053,578?
What number multiplied by what number equals 107,053,578?
All the combinations of any two natural numbers whose product equals 107,053,578.
1 × 107,053,578 = 107,053,578
2 × 53,526,789 = 107,053,578
3 × 35,684,526 = 107,053,578
6 × 17,842,263 = 107,053,578
9 × 11,894,842 = 107,053,578
18 × 5,947,421 = 107,053,578
389 × 275,202 = 107,053,578
778 × 137,601 = 107,053,578
1,167 × 91,734 = 107,053,578
2,334 × 45,867 = 107,053,578
3,501 × 30,578 = 107,053,578
7,002 × 15,289 = 107,053,578
12 unique multiplications The final answer:
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