To find all the divisors of the number 120,176:
- 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 120,176:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
120,176 = 24 × 7 × 29 × 37
120,176 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 120,176
- 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 =
7
composite factor = 2
3 =
8
composite factor = 2 × 7 =
14
composite factor = 2
4 =
16
composite factor = 2
2 × 7 =
28
prime factor =
29
prime factor =
37
composite factor = 2
3 × 7 =
56
composite factor = 2 × 29 =
58
composite factor = 2 × 37 =
74
composite factor = 2
4 × 7 =
112
composite factor = 2
2 × 29 =
116
composite factor = 2
2 × 37 =
148
composite factor = 7 × 29 =
203
composite factor = 2
3 × 29 =
232
composite factor = 7 × 37 =
259
composite factor = 2
3 × 37 =
296
This list continues below...
... This list continues from above
composite factor = 2 × 7 × 29 =
406
composite factor = 2
4 × 29 =
464
composite factor = 2 × 7 × 37 =
518
composite factor = 2
4 × 37 =
592
composite factor = 2
2 × 7 × 29 =
812
composite factor = 2
2 × 7 × 37 =
1,036
composite factor = 29 × 37 =
1,073
composite factor = 2
3 × 7 × 29 =
1,624
composite factor = 2
3 × 7 × 37 =
2,072
composite factor = 2 × 29 × 37 =
2,146
composite factor = 2
4 × 7 × 29 =
3,248
composite factor = 2
4 × 7 × 37 =
4,144
composite factor = 2
2 × 29 × 37 =
4,292
composite factor = 7 × 29 × 37 =
7,511
composite factor = 2
3 × 29 × 37 =
8,584
composite factor = 2 × 7 × 29 × 37 =
15,022
composite factor = 2
4 × 29 × 37 =
17,168
composite factor = 2
2 × 7 × 29 × 37 =
30,044
composite factor = 2
3 × 7 × 29 × 37 =
60,088
composite factor = 2
4 × 7 × 29 × 37 =
120,176
40 factors (divisors)
What times what is 120,176?
What number multiplied by what number equals 120,176?
All the combinations of any two natural numbers whose product equals 120,176.
1 × 120,176 = 120,176
2 × 60,088 = 120,176
4 × 30,044 = 120,176
7 × 17,168 = 120,176
8 × 15,022 = 120,176
14 × 8,584 = 120,176
16 × 7,511 = 120,176
28 × 4,292 = 120,176
29 × 4,144 = 120,176
37 × 3,248 = 120,176
56 × 2,146 = 120,176
58 × 2,072 = 120,176
74 × 1,624 = 120,176
112 × 1,073 = 120,176
116 × 1,036 = 120,176
148 × 812 = 120,176
203 × 592 = 120,176
232 × 518 = 120,176
259 × 464 = 120,176
296 × 406 = 120,176
20 unique multiplications The final answer:
(scroll down)