To find all the divisors of the number 8,700,000,072:
- 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 8,700,000,072:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
8,700,000,072 = 23 × 3 × 61 × 5,942,623
8,700,000,072 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 = (3 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 4 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 8,700,000,072
- 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
2 =
4
composite factor = 2 × 3 =
6
composite factor = 2
3 =
8
composite factor = 2
2 × 3 =
12
composite factor = 2
3 × 3 =
24
prime factor =
61
composite factor = 2 × 61 =
122
composite factor = 3 × 61 =
183
composite factor = 2
2 × 61 =
244
composite factor = 2 × 3 × 61 =
366
composite factor = 2
3 × 61 =
488
composite factor = 2
2 × 3 × 61 =
732
composite factor = 2
3 × 3 × 61 =
1,464
This list continues below...
... This list continues from above
prime factor =
5,942,623
composite factor = 2 × 5,942,623 =
11,885,246
composite factor = 3 × 5,942,623 =
17,827,869
composite factor = 2
2 × 5,942,623 =
23,770,492
composite factor = 2 × 3 × 5,942,623 =
35,655,738
composite factor = 2
3 × 5,942,623 =
47,540,984
composite factor = 2
2 × 3 × 5,942,623 =
71,311,476
composite factor = 2
3 × 3 × 5,942,623 =
142,622,952
composite factor = 61 × 5,942,623 =
362,500,003
composite factor = 2 × 61 × 5,942,623 =
725,000,006
composite factor = 3 × 61 × 5,942,623 =
1,087,500,009
composite factor = 2
2 × 61 × 5,942,623 =
1,450,000,012
composite factor = 2 × 3 × 61 × 5,942,623 =
2,175,000,018
composite factor = 2
3 × 61 × 5,942,623 =
2,900,000,024
composite factor = 2
2 × 3 × 61 × 5,942,623 =
4,350,000,036
composite factor = 2
3 × 3 × 61 × 5,942,623 =
8,700,000,072
32 factors (divisors)
What times what is 8,700,000,072?
What number multiplied by what number equals 8,700,000,072?
All the combinations of any two natural numbers whose product equals 8,700,000,072.
1 × 8,700,000,072 = 8,700,000,072
2 × 4,350,000,036 = 8,700,000,072
3 × 2,900,000,024 = 8,700,000,072
4 × 2,175,000,018 = 8,700,000,072
6 × 1,450,000,012 = 8,700,000,072
8 × 1,087,500,009 = 8,700,000,072
12 × 725,000,006 = 8,700,000,072
24 × 362,500,003 = 8,700,000,072
61 × 142,622,952 = 8,700,000,072
122 × 71,311,476 = 8,700,000,072
183 × 47,540,984 = 8,700,000,072
244 × 35,655,738 = 8,700,000,072
366 × 23,770,492 = 8,700,000,072
488 × 17,827,869 = 8,700,000,072
732 × 11,885,246 = 8,700,000,072
1,464 × 5,942,623 = 8,700,000,072
16 unique multiplications The final answer:
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