To find all the divisors of the number 8,500,000,012:
- 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 8,500,000,012:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
8,500,000,012 = 22 × 72 × 1,823 × 23,789
8,500,000,012 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) × (2 + 1) × (1 + 1) × (1 + 1) = 3 × 3 × 2 × 2 = 36
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 8,500,000,012
- 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 =
7
composite factor = 2 × 7 =
14
composite factor = 2
2 × 7 =
28
composite factor = 7
2 =
49
composite factor = 2 × 7
2 =
98
composite factor = 2
2 × 7
2 =
196
prime factor =
1,823
composite factor = 2 × 1,823 =
3,646
composite factor = 2
2 × 1,823 =
7,292
composite factor = 7 × 1,823 =
12,761
prime factor =
23,789
composite factor = 2 × 7 × 1,823 =
25,522
composite factor = 2 × 23,789 =
47,578
composite factor = 2
2 × 7 × 1,823 =
51,044
composite factor = 7
2 × 1,823 =
89,327
This list continues below...
... This list continues from above
composite factor = 2
2 × 23,789 =
95,156
composite factor = 7 × 23,789 =
166,523
composite factor = 2 × 7
2 × 1,823 =
178,654
composite factor = 2 × 7 × 23,789 =
333,046
composite factor = 2
2 × 7
2 × 1,823 =
357,308
composite factor = 2
2 × 7 × 23,789 =
666,092
composite factor = 7
2 × 23,789 =
1,165,661
composite factor = 2 × 7
2 × 23,789 =
2,331,322
composite factor = 2
2 × 7
2 × 23,789 =
4,662,644
composite factor = 1,823 × 23,789 =
43,367,347
composite factor = 2 × 1,823 × 23,789 =
86,734,694
composite factor = 2
2 × 1,823 × 23,789 =
173,469,388
composite factor = 7 × 1,823 × 23,789 =
303,571,429
composite factor = 2 × 7 × 1,823 × 23,789 =
607,142,858
composite factor = 2
2 × 7 × 1,823 × 23,789 =
1,214,285,716
composite factor = 7
2 × 1,823 × 23,789 =
2,125,000,003
composite factor = 2 × 7
2 × 1,823 × 23,789 =
4,250,000,006
composite factor = 2
2 × 7
2 × 1,823 × 23,789 =
8,500,000,012
36 factors (divisors)
What times what is 8,500,000,012?
What number multiplied by what number equals 8,500,000,012?
All the combinations of any two natural numbers whose product equals 8,500,000,012.
1 × 8,500,000,012 = 8,500,000,012
2 × 4,250,000,006 = 8,500,000,012
4 × 2,125,000,003 = 8,500,000,012
7 × 1,214,285,716 = 8,500,000,012
14 × 607,142,858 = 8,500,000,012
28 × 303,571,429 = 8,500,000,012
49 × 173,469,388 = 8,500,000,012
98 × 86,734,694 = 8,500,000,012
196 × 43,367,347 = 8,500,000,012
1,823 × 4,662,644 = 8,500,000,012
3,646 × 2,331,322 = 8,500,000,012
7,292 × 1,165,661 = 8,500,000,012
12,761 × 666,092 = 8,500,000,012
23,789 × 357,308 = 8,500,000,012
25,522 × 333,046 = 8,500,000,012
47,578 × 178,654 = 8,500,000,012
51,044 × 166,523 = 8,500,000,012
89,327 × 95,156 = 8,500,000,012
18 unique multiplications The final answer:
(scroll down)