To find all the divisors of the number 856,420,004:
- 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 856,420,004:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
856,420,004 = 22 × 11 × 53 × 443 × 829
856,420,004 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 = (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 856,420,004
- 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
composite factor = 2
2 =
4
prime factor =
11
composite factor = 2 × 11 =
22
composite factor = 2
2 × 11 =
44
prime factor =
53
composite factor = 2 × 53 =
106
composite factor = 2
2 × 53 =
212
prime factor =
443
composite factor = 11 × 53 =
583
prime factor =
829
composite factor = 2 × 443 =
886
composite factor = 2 × 11 × 53 =
1,166
composite factor = 2 × 829 =
1,658
composite factor = 2
2 × 443 =
1,772
composite factor = 2
2 × 11 × 53 =
2,332
composite factor = 2
2 × 829 =
3,316
composite factor = 11 × 443 =
4,873
composite factor = 11 × 829 =
9,119
composite factor = 2 × 11 × 443 =
9,746
composite factor = 2 × 11 × 829 =
18,238
composite factor = 2
2 × 11 × 443 =
19,492
composite factor = 53 × 443 =
23,479
This list continues below...
... This list continues from above
composite factor = 2
2 × 11 × 829 =
36,476
composite factor = 53 × 829 =
43,937
composite factor = 2 × 53 × 443 =
46,958
composite factor = 2 × 53 × 829 =
87,874
composite factor = 2
2 × 53 × 443 =
93,916
composite factor = 2
2 × 53 × 829 =
175,748
composite factor = 11 × 53 × 443 =
258,269
composite factor = 443 × 829 =
367,247
composite factor = 11 × 53 × 829 =
483,307
composite factor = 2 × 11 × 53 × 443 =
516,538
composite factor = 2 × 443 × 829 =
734,494
composite factor = 2 × 11 × 53 × 829 =
966,614
composite factor = 2
2 × 11 × 53 × 443 =
1,033,076
composite factor = 2
2 × 443 × 829 =
1,468,988
composite factor = 2
2 × 11 × 53 × 829 =
1,933,228
composite factor = 11 × 443 × 829 =
4,039,717
composite factor = 2 × 11 × 443 × 829 =
8,079,434
composite factor = 2
2 × 11 × 443 × 829 =
16,158,868
composite factor = 53 × 443 × 829 =
19,464,091
composite factor = 2 × 53 × 443 × 829 =
38,928,182
composite factor = 2
2 × 53 × 443 × 829 =
77,856,364
composite factor = 11 × 53 × 443 × 829 =
214,105,001
composite factor = 2 × 11 × 53 × 443 × 829 =
428,210,002
composite factor = 2
2 × 11 × 53 × 443 × 829 =
856,420,004
48 factors (divisors)
What times what is 856,420,004?
What number multiplied by what number equals 856,420,004?
All the combinations of any two natural numbers whose product equals 856,420,004.
1 × 856,420,004 = 856,420,004
2 × 428,210,002 = 856,420,004
4 × 214,105,001 = 856,420,004
11 × 77,856,364 = 856,420,004
22 × 38,928,182 = 856,420,004
44 × 19,464,091 = 856,420,004
53 × 16,158,868 = 856,420,004
106 × 8,079,434 = 856,420,004
212 × 4,039,717 = 856,420,004
443 × 1,933,228 = 856,420,004
583 × 1,468,988 = 856,420,004
829 × 1,033,076 = 856,420,004
886 × 966,614 = 856,420,004
1,166 × 734,494 = 856,420,004
1,658 × 516,538 = 856,420,004
1,772 × 483,307 = 856,420,004
2,332 × 367,247 = 856,420,004
3,316 × 258,269 = 856,420,004
4,873 × 175,748 = 856,420,004
9,119 × 93,916 = 856,420,004
9,746 × 87,874 = 856,420,004
18,238 × 46,958 = 856,420,004
19,492 × 43,937 = 856,420,004
23,479 × 36,476 = 856,420,004
24 unique multiplications The final answer:
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