To find all the divisors of the number 85,000,000,670:
- 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 85,000,000,670:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
85,000,000,670 = 2 × 5 × 13 × 1,559 × 419,401
85,000,000,670 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) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 85,000,000,670
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- 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 =
5
composite factor = 2 × 5 =
10
prime factor =
13
composite factor = 2 × 13 =
26
composite factor = 5 × 13 =
65
composite factor = 2 × 5 × 13 =
130
prime factor =
1,559
composite factor = 2 × 1,559 =
3,118
composite factor = 5 × 1,559 =
7,795
composite factor = 2 × 5 × 1,559 =
15,590
composite factor = 13 × 1,559 =
20,267
composite factor = 2 × 13 × 1,559 =
40,534
composite factor = 5 × 13 × 1,559 =
101,335
composite factor = 2 × 5 × 13 × 1,559 =
202,670
This list continues below...
... This list continues from above
prime factor =
419,401
composite factor = 2 × 419,401 =
838,802
composite factor = 5 × 419,401 =
2,097,005
composite factor = 2 × 5 × 419,401 =
4,194,010
composite factor = 13 × 419,401 =
5,452,213
composite factor = 2 × 13 × 419,401 =
10,904,426
composite factor = 5 × 13 × 419,401 =
27,261,065
composite factor = 2 × 5 × 13 × 419,401 =
54,522,130
composite factor = 1,559 × 419,401 =
653,846,159
composite factor = 2 × 1,559 × 419,401 =
1,307,692,318
composite factor = 5 × 1,559 × 419,401 =
3,269,230,795
composite factor = 2 × 5 × 1,559 × 419,401 =
6,538,461,590
composite factor = 13 × 1,559 × 419,401 =
8,500,000,067
composite factor = 2 × 13 × 1,559 × 419,401 =
17,000,000,134
composite factor = 5 × 13 × 1,559 × 419,401 =
42,500,000,335
composite factor = 2 × 5 × 13 × 1,559 × 419,401 =
85,000,000,670
32 factors (divisors)
What times what is 85,000,000,670?
What number multiplied by what number equals 85,000,000,670?
All the combinations of any two natural numbers whose product equals 85,000,000,670.
1 × 85,000,000,670 = 85,000,000,670
2 × 42,500,000,335 = 85,000,000,670
5 × 17,000,000,134 = 85,000,000,670
10 × 8,500,000,067 = 85,000,000,670
13 × 6,538,461,590 = 85,000,000,670
26 × 3,269,230,795 = 85,000,000,670
65 × 1,307,692,318 = 85,000,000,670
130 × 653,846,159 = 85,000,000,670
1,559 × 54,522,130 = 85,000,000,670
3,118 × 27,261,065 = 85,000,000,670
7,795 × 10,904,426 = 85,000,000,670
15,590 × 5,452,213 = 85,000,000,670
20,267 × 4,194,010 = 85,000,000,670
40,534 × 2,097,005 = 85,000,000,670
101,335 × 838,802 = 85,000,000,670
202,670 × 419,401 = 85,000,000,670
16 unique multiplications The final answer:
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