To find all the divisors of the number 107,051,920:
- 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 107,051,920:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
107,051,920 = 24 × 5 × 101 × 13,249
107,051,920 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) × (1 + 1) × (1 + 1) × (1 + 1) = 5 × 2 × 2 × 2 = 40
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 107,051,920
- 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
composite factor = 2
2 =
4
prime factor =
5
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
composite factor = 2
4 =
16
composite factor = 2
2 × 5 =
20
composite factor = 2
3 × 5 =
40
composite factor = 2
4 × 5 =
80
prime factor =
101
composite factor = 2 × 101 =
202
composite factor = 2
2 × 101 =
404
composite factor = 5 × 101 =
505
composite factor = 2
3 × 101 =
808
composite factor = 2 × 5 × 101 =
1,010
composite factor = 2
4 × 101 =
1,616
composite factor = 2
2 × 5 × 101 =
2,020
composite factor = 2
3 × 5 × 101 =
4,040
composite factor = 2
4 × 5 × 101 =
8,080
This list continues below...
... This list continues from above
prime factor =
13,249
composite factor = 2 × 13,249 =
26,498
composite factor = 2
2 × 13,249 =
52,996
composite factor = 5 × 13,249 =
66,245
composite factor = 2
3 × 13,249 =
105,992
composite factor = 2 × 5 × 13,249 =
132,490
composite factor = 2
4 × 13,249 =
211,984
composite factor = 2
2 × 5 × 13,249 =
264,980
composite factor = 2
3 × 5 × 13,249 =
529,960
composite factor = 2
4 × 5 × 13,249 =
1,059,920
composite factor = 101 × 13,249 =
1,338,149
composite factor = 2 × 101 × 13,249 =
2,676,298
composite factor = 2
2 × 101 × 13,249 =
5,352,596
composite factor = 5 × 101 × 13,249 =
6,690,745
composite factor = 2
3 × 101 × 13,249 =
10,705,192
composite factor = 2 × 5 × 101 × 13,249 =
13,381,490
composite factor = 2
4 × 101 × 13,249 =
21,410,384
composite factor = 2
2 × 5 × 101 × 13,249 =
26,762,980
composite factor = 2
3 × 5 × 101 × 13,249 =
53,525,960
composite factor = 2
4 × 5 × 101 × 13,249 =
107,051,920
40 factors (divisors)
What times what is 107,051,920?
What number multiplied by what number equals 107,051,920?
All the combinations of any two natural numbers whose product equals 107,051,920.
1 × 107,051,920 = 107,051,920
2 × 53,525,960 = 107,051,920
4 × 26,762,980 = 107,051,920
5 × 21,410,384 = 107,051,920
8 × 13,381,490 = 107,051,920
10 × 10,705,192 = 107,051,920
16 × 6,690,745 = 107,051,920
20 × 5,352,596 = 107,051,920
40 × 2,676,298 = 107,051,920
80 × 1,338,149 = 107,051,920
101 × 1,059,920 = 107,051,920
202 × 529,960 = 107,051,920
404 × 264,980 = 107,051,920
505 × 211,984 = 107,051,920
808 × 132,490 = 107,051,920
1,010 × 105,992 = 107,051,920
1,616 × 66,245 = 107,051,920
2,020 × 52,996 = 107,051,920
4,040 × 26,498 = 107,051,920
8,080 × 13,249 = 107,051,920
20 unique multiplications The final answer:
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