To find all the divisors of the number 498,162:
- 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 498,162:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
498,162 = 2 × 3 × 7 × 29 × 409
498,162 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 = (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 498,162
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- 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 × 3 =
6
prime factor =
7
composite factor = 2 × 7 =
14
composite factor = 3 × 7 =
21
prime factor =
29
composite factor = 2 × 3 × 7 =
42
composite factor = 2 × 29 =
58
composite factor = 3 × 29 =
87
composite factor = 2 × 3 × 29 =
174
composite factor = 7 × 29 =
203
composite factor = 2 × 7 × 29 =
406
prime factor =
409
composite factor = 3 × 7 × 29 =
609
This list continues below...
... This list continues from above
composite factor = 2 × 409 =
818
composite factor = 2 × 3 × 7 × 29 =
1,218
composite factor = 3 × 409 =
1,227
composite factor = 2 × 3 × 409 =
2,454
composite factor = 7 × 409 =
2,863
composite factor = 2 × 7 × 409 =
5,726
composite factor = 3 × 7 × 409 =
8,589
composite factor = 29 × 409 =
11,861
composite factor = 2 × 3 × 7 × 409 =
17,178
composite factor = 2 × 29 × 409 =
23,722
composite factor = 3 × 29 × 409 =
35,583
composite factor = 2 × 3 × 29 × 409 =
71,166
composite factor = 7 × 29 × 409 =
83,027
composite factor = 2 × 7 × 29 × 409 =
166,054
composite factor = 3 × 7 × 29 × 409 =
249,081
composite factor = 2 × 3 × 7 × 29 × 409 =
498,162
32 factors (divisors)
What times what is 498,162?
What number multiplied by what number equals 498,162?
All the combinations of any two natural numbers whose product equals 498,162.
1 × 498,162 = 498,162
2 × 249,081 = 498,162
3 × 166,054 = 498,162
6 × 83,027 = 498,162
7 × 71,166 = 498,162
14 × 35,583 = 498,162
21 × 23,722 = 498,162
29 × 17,178 = 498,162
42 × 11,861 = 498,162
58 × 8,589 = 498,162
87 × 5,726 = 498,162
174 × 2,863 = 498,162
203 × 2,454 = 498,162
406 × 1,227 = 498,162
409 × 1,218 = 498,162
609 × 818 = 498,162
16 unique multiplications The final answer:
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