To find all the divisors of the number 147,160:
- 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 147,160:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
147,160 = 23 × 5 × 13 × 283
147,160 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 147,160
- 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 =
13
composite factor = 2
2 × 5 =
20
composite factor = 2 × 13 =
26
composite factor = 2
3 × 5 =
40
composite factor = 2
2 × 13 =
52
composite factor = 5 × 13 =
65
composite factor = 2
3 × 13 =
104
composite factor = 2 × 5 × 13 =
130
composite factor = 2
2 × 5 × 13 =
260
prime factor =
283
This list continues below...
... This list continues from above
composite factor = 2
3 × 5 × 13 =
520
composite factor = 2 × 283 =
566
composite factor = 2
2 × 283 =
1,132
composite factor = 5 × 283 =
1,415
composite factor = 2
3 × 283 =
2,264
composite factor = 2 × 5 × 283 =
2,830
composite factor = 13 × 283 =
3,679
composite factor = 2
2 × 5 × 283 =
5,660
composite factor = 2 × 13 × 283 =
7,358
composite factor = 2
3 × 5 × 283 =
11,320
composite factor = 2
2 × 13 × 283 =
14,716
composite factor = 5 × 13 × 283 =
18,395
composite factor = 2
3 × 13 × 283 =
29,432
composite factor = 2 × 5 × 13 × 283 =
36,790
composite factor = 2
2 × 5 × 13 × 283 =
73,580
composite factor = 2
3 × 5 × 13 × 283 =
147,160
32 factors (divisors)
What times what is 147,160?
What number multiplied by what number equals 147,160?
All the combinations of any two natural numbers whose product equals 147,160.
1 × 147,160 = 147,160
2 × 73,580 = 147,160
4 × 36,790 = 147,160
5 × 29,432 = 147,160
8 × 18,395 = 147,160
10 × 14,716 = 147,160
13 × 11,320 = 147,160
20 × 7,358 = 147,160
26 × 5,660 = 147,160
40 × 3,679 = 147,160
52 × 2,830 = 147,160
65 × 2,264 = 147,160
104 × 1,415 = 147,160
130 × 1,132 = 147,160
260 × 566 = 147,160
283 × 520 = 147,160
16 unique multiplications The final answer:
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