To find all the divisors of the number 558,420:
- 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 558,420:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
558,420 = 22 × 3 × 5 × 41 × 227
558,420 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 558,420
- 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 =
41
composite factor = 2
2 × 3 × 5 =
60
composite factor = 2 × 41 =
82
composite factor = 3 × 41 =
123
composite factor = 2
2 × 41 =
164
composite factor = 5 × 41 =
205
prime factor =
227
composite factor = 2 × 3 × 41 =
246
composite factor = 2 × 5 × 41 =
410
composite factor = 2 × 227 =
454
composite factor = 2
2 × 3 × 41 =
492
composite factor = 3 × 5 × 41 =
615
composite factor = 3 × 227 =
681
This list continues below...
... This list continues from above
composite factor = 2
2 × 5 × 41 =
820
composite factor = 2
2 × 227 =
908
composite factor = 5 × 227 =
1,135
composite factor = 2 × 3 × 5 × 41 =
1,230
composite factor = 2 × 3 × 227 =
1,362
composite factor = 2 × 5 × 227 =
2,270
composite factor = 2
2 × 3 × 5 × 41 =
2,460
composite factor = 2
2 × 3 × 227 =
2,724
composite factor = 3 × 5 × 227 =
3,405
composite factor = 2
2 × 5 × 227 =
4,540
composite factor = 2 × 3 × 5 × 227 =
6,810
composite factor = 41 × 227 =
9,307
composite factor = 2
2 × 3 × 5 × 227 =
13,620
composite factor = 2 × 41 × 227 =
18,614
composite factor = 3 × 41 × 227 =
27,921
composite factor = 2
2 × 41 × 227 =
37,228
composite factor = 5 × 41 × 227 =
46,535
composite factor = 2 × 3 × 41 × 227 =
55,842
composite factor = 2 × 5 × 41 × 227 =
93,070
composite factor = 2
2 × 3 × 41 × 227 =
111,684
composite factor = 3 × 5 × 41 × 227 =
139,605
composite factor = 2
2 × 5 × 41 × 227 =
186,140
composite factor = 2 × 3 × 5 × 41 × 227 =
279,210
composite factor = 2
2 × 3 × 5 × 41 × 227 =
558,420
48 factors (divisors)
What times what is 558,420?
What number multiplied by what number equals 558,420?
All the combinations of any two natural numbers whose product equals 558,420.
1 × 558,420 = 558,420
2 × 279,210 = 558,420
3 × 186,140 = 558,420
4 × 139,605 = 558,420
5 × 111,684 = 558,420
6 × 93,070 = 558,420
10 × 55,842 = 558,420
12 × 46,535 = 558,420
15 × 37,228 = 558,420
20 × 27,921 = 558,420
30 × 18,614 = 558,420
41 × 13,620 = 558,420
60 × 9,307 = 558,420
82 × 6,810 = 558,420
123 × 4,540 = 558,420
164 × 3,405 = 558,420
205 × 2,724 = 558,420
227 × 2,460 = 558,420
246 × 2,270 = 558,420
410 × 1,362 = 558,420
454 × 1,230 = 558,420
492 × 1,135 = 558,420
615 × 908 = 558,420
681 × 820 = 558,420
24 unique multiplications The final answer:
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