To find all the divisors of the number 85,000,000,125:
- 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 85,000,000,125:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
85,000,000,125 = 3 × 53 × 61 × 3,715,847
85,000,000,125 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 = (1 + 1) × (3 + 1) × (1 + 1) × (1 + 1) = 2 × 4 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 85,000,000,125
- 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
prime factor =
5
composite factor = 3 × 5 =
15
composite factor = 5
2 =
25
prime factor =
61
composite factor = 3 × 5
2 =
75
composite factor = 5
3 =
125
composite factor = 3 × 61 =
183
composite factor = 5 × 61 =
305
composite factor = 3 × 5
3 =
375
composite factor = 3 × 5 × 61 =
915
composite factor = 5
2 × 61 =
1,525
composite factor = 3 × 5
2 × 61 =
4,575
composite factor = 5
3 × 61 =
7,625
composite factor = 3 × 5
3 × 61 =
22,875
This list continues below...
... This list continues from above
prime factor =
3,715,847
composite factor = 3 × 3,715,847 =
11,147,541
composite factor = 5 × 3,715,847 =
18,579,235
composite factor = 3 × 5 × 3,715,847 =
55,737,705
composite factor = 5
2 × 3,715,847 =
92,896,175
composite factor = 61 × 3,715,847 =
226,666,667
composite factor = 3 × 5
2 × 3,715,847 =
278,688,525
composite factor = 5
3 × 3,715,847 =
464,480,875
composite factor = 3 × 61 × 3,715,847 =
680,000,001
composite factor = 5 × 61 × 3,715,847 =
1,133,333,335
composite factor = 3 × 5
3 × 3,715,847 =
1,393,442,625
composite factor = 3 × 5 × 61 × 3,715,847 =
3,400,000,005
composite factor = 5
2 × 61 × 3,715,847 =
5,666,666,675
composite factor = 3 × 5
2 × 61 × 3,715,847 =
17,000,000,025
composite factor = 5
3 × 61 × 3,715,847 =
28,333,333,375
composite factor = 3 × 5
3 × 61 × 3,715,847 =
85,000,000,125
32 factors (divisors)
What times what is 85,000,000,125?
What number multiplied by what number equals 85,000,000,125?
All the combinations of any two natural numbers whose product equals 85,000,000,125.
1 × 85,000,000,125 = 85,000,000,125
3 × 28,333,333,375 = 85,000,000,125
5 × 17,000,000,025 = 85,000,000,125
15 × 5,666,666,675 = 85,000,000,125
25 × 3,400,000,005 = 85,000,000,125
61 × 1,393,442,625 = 85,000,000,125
75 × 1,133,333,335 = 85,000,000,125
125 × 680,000,001 = 85,000,000,125
183 × 464,480,875 = 85,000,000,125
305 × 278,688,525 = 85,000,000,125
375 × 226,666,667 = 85,000,000,125
915 × 92,896,175 = 85,000,000,125
1,525 × 55,737,705 = 85,000,000,125
4,575 × 18,579,235 = 85,000,000,125
7,625 × 11,147,541 = 85,000,000,125
22,875 × 3,715,847 = 85,000,000,125
16 unique multiplications The final answer:
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