To find all the divisors of the number 202,008:
- 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 202,008:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
202,008 = 23 × 3 × 19 × 443
202,008 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 = (3 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 4 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 202,008
- 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 = 2
3 =
8
composite factor = 2
2 × 3 =
12
prime factor =
19
composite factor = 2
3 × 3 =
24
composite factor = 2 × 19 =
38
composite factor = 3 × 19 =
57
composite factor = 2
2 × 19 =
76
composite factor = 2 × 3 × 19 =
114
composite factor = 2
3 × 19 =
152
composite factor = 2
2 × 3 × 19 =
228
prime factor =
443
This list continues below...
... This list continues from above
composite factor = 2
3 × 3 × 19 =
456
composite factor = 2 × 443 =
886
composite factor = 3 × 443 =
1,329
composite factor = 2
2 × 443 =
1,772
composite factor = 2 × 3 × 443 =
2,658
composite factor = 2
3 × 443 =
3,544
composite factor = 2
2 × 3 × 443 =
5,316
composite factor = 19 × 443 =
8,417
composite factor = 2
3 × 3 × 443 =
10,632
composite factor = 2 × 19 × 443 =
16,834
composite factor = 3 × 19 × 443 =
25,251
composite factor = 2
2 × 19 × 443 =
33,668
composite factor = 2 × 3 × 19 × 443 =
50,502
composite factor = 2
3 × 19 × 443 =
67,336
composite factor = 2
2 × 3 × 19 × 443 =
101,004
composite factor = 2
3 × 3 × 19 × 443 =
202,008
32 factors (divisors)
What times what is 202,008?
What number multiplied by what number equals 202,008?
All the combinations of any two natural numbers whose product equals 202,008.
1 × 202,008 = 202,008
2 × 101,004 = 202,008
3 × 67,336 = 202,008
4 × 50,502 = 202,008
6 × 33,668 = 202,008
8 × 25,251 = 202,008
12 × 16,834 = 202,008
19 × 10,632 = 202,008
24 × 8,417 = 202,008
38 × 5,316 = 202,008
57 × 3,544 = 202,008
76 × 2,658 = 202,008
114 × 1,772 = 202,008
152 × 1,329 = 202,008
228 × 886 = 202,008
443 × 456 = 202,008
16 unique multiplications The final answer:
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