To find all the divisors of the number 8,744,856:
- 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 8,744,856:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
8,744,856 = 23 × 3 × 199 × 1,831
8,744,856 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 8,744,856
- 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 =
3
composite factor = 2
2 =
4
composite factor = 2 × 3 =
6
composite factor = 2
3 =
8
composite factor = 2
2 × 3 =
12
composite factor = 2
3 × 3 =
24
prime factor =
199
composite factor = 2 × 199 =
398
composite factor = 3 × 199 =
597
composite factor = 2
2 × 199 =
796
composite factor = 2 × 3 × 199 =
1,194
composite factor = 2
3 × 199 =
1,592
prime factor =
1,831
composite factor = 2
2 × 3 × 199 =
2,388
This list continues below...
... This list continues from above
composite factor = 2 × 1,831 =
3,662
composite factor = 2
3 × 3 × 199 =
4,776
composite factor = 3 × 1,831 =
5,493
composite factor = 2
2 × 1,831 =
7,324
composite factor = 2 × 3 × 1,831 =
10,986
composite factor = 2
3 × 1,831 =
14,648
composite factor = 2
2 × 3 × 1,831 =
21,972
composite factor = 2
3 × 3 × 1,831 =
43,944
composite factor = 199 × 1,831 =
364,369
composite factor = 2 × 199 × 1,831 =
728,738
composite factor = 3 × 199 × 1,831 =
1,093,107
composite factor = 2
2 × 199 × 1,831 =
1,457,476
composite factor = 2 × 3 × 199 × 1,831 =
2,186,214
composite factor = 2
3 × 199 × 1,831 =
2,914,952
composite factor = 2
2 × 3 × 199 × 1,831 =
4,372,428
composite factor = 2
3 × 3 × 199 × 1,831 =
8,744,856
32 factors (divisors)
What times what is 8,744,856?
What number multiplied by what number equals 8,744,856?
All the combinations of any two natural numbers whose product equals 8,744,856.
1 × 8,744,856 = 8,744,856
2 × 4,372,428 = 8,744,856
3 × 2,914,952 = 8,744,856
4 × 2,186,214 = 8,744,856
6 × 1,457,476 = 8,744,856
8 × 1,093,107 = 8,744,856
12 × 728,738 = 8,744,856
24 × 364,369 = 8,744,856
199 × 43,944 = 8,744,856
398 × 21,972 = 8,744,856
597 × 14,648 = 8,744,856
796 × 10,986 = 8,744,856
1,194 × 7,324 = 8,744,856
1,592 × 5,493 = 8,744,856
1,831 × 4,776 = 8,744,856
2,388 × 3,662 = 8,744,856
16 unique multiplications The final answer:
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