To find all the divisors of the number 67,488:
- 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 67,488:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
67,488 = 25 × 3 × 19 × 37
67,488 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 = (5 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 6 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 67,488
- 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
composite factor = 2
4 =
16
prime factor =
19
composite factor = 2
3 × 3 =
24
composite factor = 2
5 =
32
prime factor =
37
composite factor = 2 × 19 =
38
composite factor = 2
4 × 3 =
48
composite factor = 3 × 19 =
57
composite factor = 2 × 37 =
74
composite factor = 2
2 × 19 =
76
composite factor = 2
5 × 3 =
96
composite factor = 3 × 37 =
111
composite factor = 2 × 3 × 19 =
114
composite factor = 2
2 × 37 =
148
composite factor = 2
3 × 19 =
152
composite factor = 2 × 3 × 37 =
222
composite factor = 2
2 × 3 × 19 =
228
This list continues below...
... This list continues from above
composite factor = 2
3 × 37 =
296
composite factor = 2
4 × 19 =
304
composite factor = 2
2 × 3 × 37 =
444
composite factor = 2
3 × 3 × 19 =
456
composite factor = 2
4 × 37 =
592
composite factor = 2
5 × 19 =
608
composite factor = 19 × 37 =
703
composite factor = 2
3 × 3 × 37 =
888
composite factor = 2
4 × 3 × 19 =
912
composite factor = 2
5 × 37 =
1,184
composite factor = 2 × 19 × 37 =
1,406
composite factor = 2
4 × 3 × 37 =
1,776
composite factor = 2
5 × 3 × 19 =
1,824
composite factor = 3 × 19 × 37 =
2,109
composite factor = 2
2 × 19 × 37 =
2,812
composite factor = 2
5 × 3 × 37 =
3,552
composite factor = 2 × 3 × 19 × 37 =
4,218
composite factor = 2
3 × 19 × 37 =
5,624
composite factor = 2
2 × 3 × 19 × 37 =
8,436
composite factor = 2
4 × 19 × 37 =
11,248
composite factor = 2
3 × 3 × 19 × 37 =
16,872
composite factor = 2
5 × 19 × 37 =
22,496
composite factor = 2
4 × 3 × 19 × 37 =
33,744
composite factor = 2
5 × 3 × 19 × 37 =
67,488
48 factors (divisors)
What times what is 67,488?
What number multiplied by what number equals 67,488?
All the combinations of any two natural numbers whose product equals 67,488.
1 × 67,488 = 67,488
2 × 33,744 = 67,488
3 × 22,496 = 67,488
4 × 16,872 = 67,488
6 × 11,248 = 67,488
8 × 8,436 = 67,488
12 × 5,624 = 67,488
16 × 4,218 = 67,488
19 × 3,552 = 67,488
24 × 2,812 = 67,488
32 × 2,109 = 67,488
37 × 1,824 = 67,488
38 × 1,776 = 67,488
48 × 1,406 = 67,488
57 × 1,184 = 67,488
74 × 912 = 67,488
76 × 888 = 67,488
96 × 703 = 67,488
111 × 608 = 67,488
114 × 592 = 67,488
148 × 456 = 67,488
152 × 444 = 67,488
222 × 304 = 67,488
228 × 296 = 67,488
24 unique multiplications The final answer:
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