To find all the divisors of the number 132,880:
- 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 132,880:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
132,880 = 24 × 5 × 11 × 151
132,880 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 = (4 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 5 × 2 × 2 × 2 = 40
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 132,880
- 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
composite factor = 2
2 =
4
prime factor =
5
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
prime factor =
11
composite factor = 2
4 =
16
composite factor = 2
2 × 5 =
20
composite factor = 2 × 11 =
22
composite factor = 2
3 × 5 =
40
composite factor = 2
2 × 11 =
44
composite factor = 5 × 11 =
55
composite factor = 2
4 × 5 =
80
composite factor = 2
3 × 11 =
88
composite factor = 2 × 5 × 11 =
110
prime factor =
151
composite factor = 2
4 × 11 =
176
composite factor = 2
2 × 5 × 11 =
220
composite factor = 2 × 151 =
302
This list continues below...
... This list continues from above
composite factor = 2
3 × 5 × 11 =
440
composite factor = 2
2 × 151 =
604
composite factor = 5 × 151 =
755
composite factor = 2
4 × 5 × 11 =
880
composite factor = 2
3 × 151 =
1,208
composite factor = 2 × 5 × 151 =
1,510
composite factor = 11 × 151 =
1,661
composite factor = 2
4 × 151 =
2,416
composite factor = 2
2 × 5 × 151 =
3,020
composite factor = 2 × 11 × 151 =
3,322
composite factor = 2
3 × 5 × 151 =
6,040
composite factor = 2
2 × 11 × 151 =
6,644
composite factor = 5 × 11 × 151 =
8,305
composite factor = 2
4 × 5 × 151 =
12,080
composite factor = 2
3 × 11 × 151 =
13,288
composite factor = 2 × 5 × 11 × 151 =
16,610
composite factor = 2
4 × 11 × 151 =
26,576
composite factor = 2
2 × 5 × 11 × 151 =
33,220
composite factor = 2
3 × 5 × 11 × 151 =
66,440
composite factor = 2
4 × 5 × 11 × 151 =
132,880
40 factors (divisors)
What times what is 132,880?
What number multiplied by what number equals 132,880?
All the combinations of any two natural numbers whose product equals 132,880.
1 × 132,880 = 132,880
2 × 66,440 = 132,880
4 × 33,220 = 132,880
5 × 26,576 = 132,880
8 × 16,610 = 132,880
10 × 13,288 = 132,880
11 × 12,080 = 132,880
16 × 8,305 = 132,880
20 × 6,644 = 132,880
22 × 6,040 = 132,880
40 × 3,322 = 132,880
44 × 3,020 = 132,880
55 × 2,416 = 132,880
80 × 1,661 = 132,880
88 × 1,510 = 132,880
110 × 1,208 = 132,880
151 × 880 = 132,880
176 × 755 = 132,880
220 × 604 = 132,880
302 × 440 = 132,880
20 unique multiplications The final answer:
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