To find all the divisors of the number 120,032:
- 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 120,032:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
120,032 = 25 × 112 × 31
120,032 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) × (2 + 1) × (1 + 1) = 6 × 3 × 2 = 36
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 120,032
- 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
composite factor = 2
3 =
8
prime factor =
11
composite factor = 2
4 =
16
composite factor = 2 × 11 =
22
prime factor =
31
composite factor = 2
5 =
32
composite factor = 2
2 × 11 =
44
composite factor = 2 × 31 =
62
composite factor = 2
3 × 11 =
88
composite factor = 11
2 =
121
composite factor = 2
2 × 31 =
124
composite factor = 2
4 × 11 =
176
composite factor = 2 × 11
2 =
242
composite factor = 2
3 × 31 =
248
composite factor = 11 × 31 =
341
This list continues below...
... This list continues from above
composite factor = 2
5 × 11 =
352
composite factor = 2
2 × 11
2 =
484
composite factor = 2
4 × 31 =
496
composite factor = 2 × 11 × 31 =
682
composite factor = 2
3 × 11
2 =
968
composite factor = 2
5 × 31 =
992
composite factor = 2
2 × 11 × 31 =
1,364
composite factor = 2
4 × 11
2 =
1,936
composite factor = 2
3 × 11 × 31 =
2,728
composite factor = 11
2 × 31 =
3,751
composite factor = 2
5 × 11
2 =
3,872
composite factor = 2
4 × 11 × 31 =
5,456
composite factor = 2 × 11
2 × 31 =
7,502
composite factor = 2
5 × 11 × 31 =
10,912
composite factor = 2
2 × 11
2 × 31 =
15,004
composite factor = 2
3 × 11
2 × 31 =
30,008
composite factor = 2
4 × 11
2 × 31 =
60,016
composite factor = 2
5 × 11
2 × 31 =
120,032
36 factors (divisors)
What times what is 120,032?
What number multiplied by what number equals 120,032?
All the combinations of any two natural numbers whose product equals 120,032.
1 × 120,032 = 120,032
2 × 60,016 = 120,032
4 × 30,008 = 120,032
8 × 15,004 = 120,032
11 × 10,912 = 120,032
16 × 7,502 = 120,032
22 × 5,456 = 120,032
31 × 3,872 = 120,032
32 × 3,751 = 120,032
44 × 2,728 = 120,032
62 × 1,936 = 120,032
88 × 1,364 = 120,032
121 × 992 = 120,032
124 × 968 = 120,032
176 × 682 = 120,032
242 × 496 = 120,032
248 × 484 = 120,032
341 × 352 = 120,032
18 unique multiplications The final answer:
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