To find all the divisors of the number 20,000,000,007:
- 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 20,000,000,007:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
20,000,000,007 = 33 × 13 × 6,353 × 8,969
20,000,000,007 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 20,000,000,007
- 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 =
3
composite factor = 3
2 =
9
prime factor =
13
composite factor = 3
3 =
27
composite factor = 3 × 13 =
39
composite factor = 3
2 × 13 =
117
composite factor = 3
3 × 13 =
351
prime factor =
6,353
prime factor =
8,969
composite factor = 3 × 6,353 =
19,059
composite factor = 3 × 8,969 =
26,907
composite factor = 3
2 × 6,353 =
57,177
composite factor = 3
2 × 8,969 =
80,721
composite factor = 13 × 6,353 =
82,589
composite factor = 13 × 8,969 =
116,597
This list continues below...
... This list continues from above
composite factor = 3
3 × 6,353 =
171,531
composite factor = 3
3 × 8,969 =
242,163
composite factor = 3 × 13 × 6,353 =
247,767
composite factor = 3 × 13 × 8,969 =
349,791
composite factor = 3
2 × 13 × 6,353 =
743,301
composite factor = 3
2 × 13 × 8,969 =
1,049,373
composite factor = 3
3 × 13 × 6,353 =
2,229,903
composite factor = 3
3 × 13 × 8,969 =
3,148,119
composite factor = 6,353 × 8,969 =
56,980,057
composite factor = 3 × 6,353 × 8,969 =
170,940,171
composite factor = 3
2 × 6,353 × 8,969 =
512,820,513
composite factor = 13 × 6,353 × 8,969 =
740,740,741
composite factor = 3
3 × 6,353 × 8,969 =
1,538,461,539
composite factor = 3 × 13 × 6,353 × 8,969 =
2,222,222,223
composite factor = 3
2 × 13 × 6,353 × 8,969 =
6,666,666,669
composite factor = 3
3 × 13 × 6,353 × 8,969 =
20,000,000,007
32 factors (divisors)
What times what is 20,000,000,007?
What number multiplied by what number equals 20,000,000,007?
All the combinations of any two natural numbers whose product equals 20,000,000,007.
1 × 20,000,000,007 = 20,000,000,007
3 × 6,666,666,669 = 20,000,000,007
9 × 2,222,222,223 = 20,000,000,007
13 × 1,538,461,539 = 20,000,000,007
27 × 740,740,741 = 20,000,000,007
39 × 512,820,513 = 20,000,000,007
117 × 170,940,171 = 20,000,000,007
351 × 56,980,057 = 20,000,000,007
6,353 × 3,148,119 = 20,000,000,007
8,969 × 2,229,903 = 20,000,000,007
19,059 × 1,049,373 = 20,000,000,007
26,907 × 743,301 = 20,000,000,007
57,177 × 349,791 = 20,000,000,007
80,721 × 247,767 = 20,000,000,007
82,589 × 242,163 = 20,000,000,007
116,597 × 171,531 = 20,000,000,007
16 unique multiplications The final answer:
(scroll down)