To find all the divisors of the number 497,670:
- 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 497,670:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
497,670 = 2 × 3 × 5 × 53 × 313
497,670 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 497,670
- 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
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 2 × 5 =
10
composite factor = 3 × 5 =
15
composite factor = 2 × 3 × 5 =
30
prime factor =
53
composite factor = 2 × 53 =
106
composite factor = 3 × 53 =
159
composite factor = 5 × 53 =
265
prime factor =
313
composite factor = 2 × 3 × 53 =
318
composite factor = 2 × 5 × 53 =
530
composite factor = 2 × 313 =
626
This list continues below...
... This list continues from above
composite factor = 3 × 5 × 53 =
795
composite factor = 3 × 313 =
939
composite factor = 5 × 313 =
1,565
composite factor = 2 × 3 × 5 × 53 =
1,590
composite factor = 2 × 3 × 313 =
1,878
composite factor = 2 × 5 × 313 =
3,130
composite factor = 3 × 5 × 313 =
4,695
composite factor = 2 × 3 × 5 × 313 =
9,390
composite factor = 53 × 313 =
16,589
composite factor = 2 × 53 × 313 =
33,178
composite factor = 3 × 53 × 313 =
49,767
composite factor = 5 × 53 × 313 =
82,945
composite factor = 2 × 3 × 53 × 313 =
99,534
composite factor = 2 × 5 × 53 × 313 =
165,890
composite factor = 3 × 5 × 53 × 313 =
248,835
composite factor = 2 × 3 × 5 × 53 × 313 =
497,670
32 factors (divisors)
What times what is 497,670?
What number multiplied by what number equals 497,670?
All the combinations of any two natural numbers whose product equals 497,670.
1 × 497,670 = 497,670
2 × 248,835 = 497,670
3 × 165,890 = 497,670
5 × 99,534 = 497,670
6 × 82,945 = 497,670
10 × 49,767 = 497,670
15 × 33,178 = 497,670
30 × 16,589 = 497,670
53 × 9,390 = 497,670
106 × 4,695 = 497,670
159 × 3,130 = 497,670
265 × 1,878 = 497,670
313 × 1,590 = 497,670
318 × 1,565 = 497,670
530 × 939 = 497,670
626 × 795 = 497,670
16 unique multiplications The final answer:
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