To find all the divisors of the number 790,202,724:
- 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 790,202,724:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
790,202,724 = 22 × 3 × 233 × 409 × 691
790,202,724 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 790,202,724
- 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
2 × 3 =
12
prime factor =
233
prime factor =
409
composite factor = 2 × 233 =
466
prime factor =
691
composite factor = 3 × 233 =
699
composite factor = 2 × 409 =
818
composite factor = 2
2 × 233 =
932
composite factor = 3 × 409 =
1,227
composite factor = 2 × 691 =
1,382
composite factor = 2 × 3 × 233 =
1,398
composite factor = 2
2 × 409 =
1,636
composite factor = 3 × 691 =
2,073
composite factor = 2 × 3 × 409 =
2,454
composite factor = 2
2 × 691 =
2,764
composite factor = 2
2 × 3 × 233 =
2,796
composite factor = 2 × 3 × 691 =
4,146
composite factor = 2
2 × 3 × 409 =
4,908
composite factor = 2
2 × 3 × 691 =
8,292
This list continues below...
... This list continues from above
composite factor = 233 × 409 =
95,297
composite factor = 233 × 691 =
161,003
composite factor = 2 × 233 × 409 =
190,594
composite factor = 409 × 691 =
282,619
composite factor = 3 × 233 × 409 =
285,891
composite factor = 2 × 233 × 691 =
322,006
composite factor = 2
2 × 233 × 409 =
381,188
composite factor = 3 × 233 × 691 =
483,009
composite factor = 2 × 409 × 691 =
565,238
composite factor = 2 × 3 × 233 × 409 =
571,782
composite factor = 2
2 × 233 × 691 =
644,012
composite factor = 3 × 409 × 691 =
847,857
composite factor = 2 × 3 × 233 × 691 =
966,018
composite factor = 2
2 × 409 × 691 =
1,130,476
composite factor = 2
2 × 3 × 233 × 409 =
1,143,564
composite factor = 2 × 3 × 409 × 691 =
1,695,714
composite factor = 2
2 × 3 × 233 × 691 =
1,932,036
composite factor = 2
2 × 3 × 409 × 691 =
3,391,428
composite factor = 233 × 409 × 691 =
65,850,227
composite factor = 2 × 233 × 409 × 691 =
131,700,454
composite factor = 3 × 233 × 409 × 691 =
197,550,681
composite factor = 2
2 × 233 × 409 × 691 =
263,400,908
composite factor = 2 × 3 × 233 × 409 × 691 =
395,101,362
composite factor = 2
2 × 3 × 233 × 409 × 691 =
790,202,724
48 factors (divisors)
What times what is 790,202,724?
What number multiplied by what number equals 790,202,724?
All the combinations of any two natural numbers whose product equals 790,202,724.
1 × 790,202,724 = 790,202,724
2 × 395,101,362 = 790,202,724
3 × 263,400,908 = 790,202,724
4 × 197,550,681 = 790,202,724
6 × 131,700,454 = 790,202,724
12 × 65,850,227 = 790,202,724
233 × 3,391,428 = 790,202,724
409 × 1,932,036 = 790,202,724
466 × 1,695,714 = 790,202,724
691 × 1,143,564 = 790,202,724
699 × 1,130,476 = 790,202,724
818 × 966,018 = 790,202,724
932 × 847,857 = 790,202,724
1,227 × 644,012 = 790,202,724
1,382 × 571,782 = 790,202,724
1,398 × 565,238 = 790,202,724
1,636 × 483,009 = 790,202,724
2,073 × 381,188 = 790,202,724
2,454 × 322,006 = 790,202,724
2,764 × 285,891 = 790,202,724
2,796 × 282,619 = 790,202,724
4,146 × 190,594 = 790,202,724
4,908 × 161,003 = 790,202,724
8,292 × 95,297 = 790,202,724
24 unique multiplications The final answer:
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