To find all the divisors of the number 561,060,828:
- 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 561,060,828:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
561,060,828 = 22 × 32 × 3,907 × 3,989
561,060,828 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) × (2 + 1) × (1 + 1) × (1 + 1) = 3 × 3 × 2 × 2 = 36
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 561,060,828
- 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 = 3
2 =
9
composite factor = 2
2 × 3 =
12
composite factor = 2 × 3
2 =
18
composite factor = 2
2 × 3
2 =
36
prime factor =
3,907
prime factor =
3,989
composite factor = 2 × 3,907 =
7,814
composite factor = 2 × 3,989 =
7,978
composite factor = 3 × 3,907 =
11,721
composite factor = 3 × 3,989 =
11,967
composite factor = 2
2 × 3,907 =
15,628
composite factor = 2
2 × 3,989 =
15,956
composite factor = 2 × 3 × 3,907 =
23,442
This list continues below...
... This list continues from above
composite factor = 2 × 3 × 3,989 =
23,934
composite factor = 3
2 × 3,907 =
35,163
composite factor = 3
2 × 3,989 =
35,901
composite factor = 2
2 × 3 × 3,907 =
46,884
composite factor = 2
2 × 3 × 3,989 =
47,868
composite factor = 2 × 3
2 × 3,907 =
70,326
composite factor = 2 × 3
2 × 3,989 =
71,802
composite factor = 2
2 × 3
2 × 3,907 =
140,652
composite factor = 2
2 × 3
2 × 3,989 =
143,604
composite factor = 3,907 × 3,989 =
15,585,023
composite factor = 2 × 3,907 × 3,989 =
31,170,046
composite factor = 3 × 3,907 × 3,989 =
46,755,069
composite factor = 2
2 × 3,907 × 3,989 =
62,340,092
composite factor = 2 × 3 × 3,907 × 3,989 =
93,510,138
composite factor = 3
2 × 3,907 × 3,989 =
140,265,207
composite factor = 2
2 × 3 × 3,907 × 3,989 =
187,020,276
composite factor = 2 × 3
2 × 3,907 × 3,989 =
280,530,414
composite factor = 2
2 × 3
2 × 3,907 × 3,989 =
561,060,828
36 factors (divisors)
What times what is 561,060,828?
What number multiplied by what number equals 561,060,828?
All the combinations of any two natural numbers whose product equals 561,060,828.
1 × 561,060,828 = 561,060,828
2 × 280,530,414 = 561,060,828
3 × 187,020,276 = 561,060,828
4 × 140,265,207 = 561,060,828
6 × 93,510,138 = 561,060,828
9 × 62,340,092 = 561,060,828
12 × 46,755,069 = 561,060,828
18 × 31,170,046 = 561,060,828
36 × 15,585,023 = 561,060,828
3,907 × 143,604 = 561,060,828
3,989 × 140,652 = 561,060,828
7,814 × 71,802 = 561,060,828
7,978 × 70,326 = 561,060,828
11,721 × 47,868 = 561,060,828
11,967 × 46,884 = 561,060,828
15,628 × 35,901 = 561,060,828
15,956 × 35,163 = 561,060,828
23,442 × 23,934 = 561,060,828
18 unique multiplications The final answer:
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