To find all the divisors of the number 459,660:
- 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 459,660:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
459,660 = 22 × 3 × 5 × 47 × 163
459,660 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 459,660
- 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
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
2 × 5 =
20
composite factor = 2 × 3 × 5 =
30
prime factor =
47
composite factor = 2
2 × 3 × 5 =
60
composite factor = 2 × 47 =
94
composite factor = 3 × 47 =
141
prime factor =
163
composite factor = 2
2 × 47 =
188
composite factor = 5 × 47 =
235
composite factor = 2 × 3 × 47 =
282
composite factor = 2 × 163 =
326
composite factor = 2 × 5 × 47 =
470
composite factor = 3 × 163 =
489
composite factor = 2
2 × 3 × 47 =
564
composite factor = 2
2 × 163 =
652
This list continues below...
... This list continues from above
composite factor = 3 × 5 × 47 =
705
composite factor = 5 × 163 =
815
composite factor = 2
2 × 5 × 47 =
940
composite factor = 2 × 3 × 163 =
978
composite factor = 2 × 3 × 5 × 47 =
1,410
composite factor = 2 × 5 × 163 =
1,630
composite factor = 2
2 × 3 × 163 =
1,956
composite factor = 3 × 5 × 163 =
2,445
composite factor = 2
2 × 3 × 5 × 47 =
2,820
composite factor = 2
2 × 5 × 163 =
3,260
composite factor = 2 × 3 × 5 × 163 =
4,890
composite factor = 47 × 163 =
7,661
composite factor = 2
2 × 3 × 5 × 163 =
9,780
composite factor = 2 × 47 × 163 =
15,322
composite factor = 3 × 47 × 163 =
22,983
composite factor = 2
2 × 47 × 163 =
30,644
composite factor = 5 × 47 × 163 =
38,305
composite factor = 2 × 3 × 47 × 163 =
45,966
composite factor = 2 × 5 × 47 × 163 =
76,610
composite factor = 2
2 × 3 × 47 × 163 =
91,932
composite factor = 3 × 5 × 47 × 163 =
114,915
composite factor = 2
2 × 5 × 47 × 163 =
153,220
composite factor = 2 × 3 × 5 × 47 × 163 =
229,830
composite factor = 2
2 × 3 × 5 × 47 × 163 =
459,660
48 factors (divisors)
What times what is 459,660?
What number multiplied by what number equals 459,660?
All the combinations of any two natural numbers whose product equals 459,660.
1 × 459,660 = 459,660
2 × 229,830 = 459,660
3 × 153,220 = 459,660
4 × 114,915 = 459,660
5 × 91,932 = 459,660
6 × 76,610 = 459,660
10 × 45,966 = 459,660
12 × 38,305 = 459,660
15 × 30,644 = 459,660
20 × 22,983 = 459,660
30 × 15,322 = 459,660
47 × 9,780 = 459,660
60 × 7,661 = 459,660
94 × 4,890 = 459,660
141 × 3,260 = 459,660
163 × 2,820 = 459,660
188 × 2,445 = 459,660
235 × 1,956 = 459,660
282 × 1,630 = 459,660
326 × 1,410 = 459,660
470 × 978 = 459,660
489 × 940 = 459,660
564 × 815 = 459,660
652 × 705 = 459,660
24 unique multiplications The final answer:
(scroll down)