To find all the divisors of the number 83,268:
- 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 83,268:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
83,268 = 22 × 34 × 257
83,268 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) × (4 + 1) × (1 + 1) = 3 × 5 × 2 = 30
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 83,268
- 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 = 3
2 =
9
composite factor = 2
2 × 3 =
12
composite factor = 2 × 3
2 =
18
composite factor = 3
3 =
27
composite factor = 2
2 × 3
2 =
36
composite factor = 2 × 3
3 =
54
composite factor = 3
4 =
81
composite factor = 2
2 × 3
3 =
108
composite factor = 2 × 3
4 =
162
prime factor =
257
This list continues below...
... This list continues from above
composite factor = 2
2 × 3
4 =
324
composite factor = 2 × 257 =
514
composite factor = 3 × 257 =
771
composite factor = 2
2 × 257 =
1,028
composite factor = 2 × 3 × 257 =
1,542
composite factor = 3
2 × 257 =
2,313
composite factor = 2
2 × 3 × 257 =
3,084
composite factor = 2 × 3
2 × 257 =
4,626
composite factor = 3
3 × 257 =
6,939
composite factor = 2
2 × 3
2 × 257 =
9,252
composite factor = 2 × 3
3 × 257 =
13,878
composite factor = 3
4 × 257 =
20,817
composite factor = 2
2 × 3
3 × 257 =
27,756
composite factor = 2 × 3
4 × 257 =
41,634
composite factor = 2
2 × 3
4 × 257 =
83,268
30 factors (divisors)
What times what is 83,268?
What number multiplied by what number equals 83,268?
All the combinations of any two natural numbers whose product equals 83,268.
1 × 83,268 = 83,268
2 × 41,634 = 83,268
3 × 27,756 = 83,268
4 × 20,817 = 83,268
6 × 13,878 = 83,268
9 × 9,252 = 83,268
12 × 6,939 = 83,268
18 × 4,626 = 83,268
27 × 3,084 = 83,268
36 × 2,313 = 83,268
54 × 1,542 = 83,268
81 × 1,028 = 83,268
108 × 771 = 83,268
162 × 514 = 83,268
257 × 324 = 83,268
15 unique multiplications The final answer:
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