To find all the divisors of the number 8,900,000,012:
- 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 8,900,000,012:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
8,900,000,012 = 22 × 79 × 101 × 431 × 647
8,900,000,012 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 = (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 8,900,000,012
- 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 =
79
prime factor =
101
composite factor = 2 × 79 =
158
composite factor = 2 × 101 =
202
composite factor = 2
2 × 79 =
316
composite factor = 2
2 × 101 =
404
prime factor =
431
prime factor =
647
composite factor = 2 × 431 =
862
composite factor = 2 × 647 =
1,294
composite factor = 2
2 × 431 =
1,724
composite factor = 2
2 × 647 =
2,588
composite factor = 79 × 101 =
7,979
composite factor = 2 × 79 × 101 =
15,958
composite factor = 2
2 × 79 × 101 =
31,916
composite factor = 79 × 431 =
34,049
composite factor = 101 × 431 =
43,531
composite factor = 79 × 647 =
51,113
composite factor = 101 × 647 =
65,347
composite factor = 2 × 79 × 431 =
68,098
composite factor = 2 × 101 × 431 =
87,062
This list continues below...
... This list continues from above
composite factor = 2 × 79 × 647 =
102,226
composite factor = 2 × 101 × 647 =
130,694
composite factor = 2
2 × 79 × 431 =
136,196
composite factor = 2
2 × 101 × 431 =
174,124
composite factor = 2
2 × 79 × 647 =
204,452
composite factor = 2
2 × 101 × 647 =
261,388
composite factor = 431 × 647 =
278,857
composite factor = 2 × 431 × 647 =
557,714
composite factor = 2
2 × 431 × 647 =
1,115,428
composite factor = 79 × 101 × 431 =
3,438,949
composite factor = 79 × 101 × 647 =
5,162,413
composite factor = 2 × 79 × 101 × 431 =
6,877,898
composite factor = 2 × 79 × 101 × 647 =
10,324,826
composite factor = 2
2 × 79 × 101 × 431 =
13,755,796
composite factor = 2
2 × 79 × 101 × 647 =
20,649,652
composite factor = 79 × 431 × 647 =
22,029,703
composite factor = 101 × 431 × 647 =
28,164,557
composite factor = 2 × 79 × 431 × 647 =
44,059,406
composite factor = 2 × 101 × 431 × 647 =
56,329,114
composite factor = 2
2 × 79 × 431 × 647 =
88,118,812
composite factor = 2
2 × 101 × 431 × 647 =
112,658,228
composite factor = 79 × 101 × 431 × 647 =
2,225,000,003
composite factor = 2 × 79 × 101 × 431 × 647 =
4,450,000,006
composite factor = 2
2 × 79 × 101 × 431 × 647 =
8,900,000,012
48 factors (divisors)
What times what is 8,900,000,012?
What number multiplied by what number equals 8,900,000,012?
All the combinations of any two natural numbers whose product equals 8,900,000,012.
1 × 8,900,000,012 = 8,900,000,012
2 × 4,450,000,006 = 8,900,000,012
4 × 2,225,000,003 = 8,900,000,012
79 × 112,658,228 = 8,900,000,012
101 × 88,118,812 = 8,900,000,012
158 × 56,329,114 = 8,900,000,012
202 × 44,059,406 = 8,900,000,012
316 × 28,164,557 = 8,900,000,012
404 × 22,029,703 = 8,900,000,012
431 × 20,649,652 = 8,900,000,012
647 × 13,755,796 = 8,900,000,012
862 × 10,324,826 = 8,900,000,012
1,294 × 6,877,898 = 8,900,000,012
1,724 × 5,162,413 = 8,900,000,012
2,588 × 3,438,949 = 8,900,000,012
7,979 × 1,115,428 = 8,900,000,012
15,958 × 557,714 = 8,900,000,012
31,916 × 278,857 = 8,900,000,012
34,049 × 261,388 = 8,900,000,012
43,531 × 204,452 = 8,900,000,012
51,113 × 174,124 = 8,900,000,012
65,347 × 136,196 = 8,900,000,012
68,098 × 130,694 = 8,900,000,012
87,062 × 102,226 = 8,900,000,012
24 unique multiplications The final answer:
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