To find all the divisors of the number 856,436,750:
- 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 856,436,750:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
856,436,750 = 2 × 53 × 13 × 263,519
856,436,750 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 856,436,750
- 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
prime factor =
5
composite factor = 2 × 5 =
10
prime factor =
13
composite factor = 5
2 =
25
composite factor = 2 × 13 =
26
composite factor = 2 × 5
2 =
50
composite factor = 5 × 13 =
65
composite factor = 5
3 =
125
composite factor = 2 × 5 × 13 =
130
composite factor = 2 × 5
3 =
250
composite factor = 5
2 × 13 =
325
composite factor = 2 × 5
2 × 13 =
650
composite factor = 5
3 × 13 =
1,625
composite factor = 2 × 5
3 × 13 =
3,250
This list continues below...
... This list continues from above
prime factor =
263,519
composite factor = 2 × 263,519 =
527,038
composite factor = 5 × 263,519 =
1,317,595
composite factor = 2 × 5 × 263,519 =
2,635,190
composite factor = 13 × 263,519 =
3,425,747
composite factor = 5
2 × 263,519 =
6,587,975
composite factor = 2 × 13 × 263,519 =
6,851,494
composite factor = 2 × 5
2 × 263,519 =
13,175,950
composite factor = 5 × 13 × 263,519 =
17,128,735
composite factor = 5
3 × 263,519 =
32,939,875
composite factor = 2 × 5 × 13 × 263,519 =
34,257,470
composite factor = 2 × 5
3 × 263,519 =
65,879,750
composite factor = 5
2 × 13 × 263,519 =
85,643,675
composite factor = 2 × 5
2 × 13 × 263,519 =
171,287,350
composite factor = 5
3 × 13 × 263,519 =
428,218,375
composite factor = 2 × 5
3 × 13 × 263,519 =
856,436,750
32 factors (divisors)
What times what is 856,436,750?
What number multiplied by what number equals 856,436,750?
All the combinations of any two natural numbers whose product equals 856,436,750.
1 × 856,436,750 = 856,436,750
2 × 428,218,375 = 856,436,750
5 × 171,287,350 = 856,436,750
10 × 85,643,675 = 856,436,750
13 × 65,879,750 = 856,436,750
25 × 34,257,470 = 856,436,750
26 × 32,939,875 = 856,436,750
50 × 17,128,735 = 856,436,750
65 × 13,175,950 = 856,436,750
125 × 6,851,494 = 856,436,750
130 × 6,587,975 = 856,436,750
250 × 3,425,747 = 856,436,750
325 × 2,635,190 = 856,436,750
650 × 1,317,595 = 856,436,750
1,625 × 527,038 = 856,436,750
3,250 × 263,519 = 856,436,750
16 unique multiplications The final answer:
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