To find all the divisors of the number 988,962:
- 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 988,962:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
988,962 = 2 × 3 × 13 × 31 × 409
988,962 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 = (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 988,962
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- 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 × 3 =
6
prime factor =
13
composite factor = 2 × 13 =
26
prime factor =
31
composite factor = 3 × 13 =
39
composite factor = 2 × 31 =
62
composite factor = 2 × 3 × 13 =
78
composite factor = 3 × 31 =
93
composite factor = 2 × 3 × 31 =
186
composite factor = 13 × 31 =
403
prime factor =
409
composite factor = 2 × 13 × 31 =
806
composite factor = 2 × 409 =
818
This list continues below...
... This list continues from above
composite factor = 3 × 13 × 31 =
1,209
composite factor = 3 × 409 =
1,227
composite factor = 2 × 3 × 13 × 31 =
2,418
composite factor = 2 × 3 × 409 =
2,454
composite factor = 13 × 409 =
5,317
composite factor = 2 × 13 × 409 =
10,634
composite factor = 31 × 409 =
12,679
composite factor = 3 × 13 × 409 =
15,951
composite factor = 2 × 31 × 409 =
25,358
composite factor = 2 × 3 × 13 × 409 =
31,902
composite factor = 3 × 31 × 409 =
38,037
composite factor = 2 × 3 × 31 × 409 =
76,074
composite factor = 13 × 31 × 409 =
164,827
composite factor = 2 × 13 × 31 × 409 =
329,654
composite factor = 3 × 13 × 31 × 409 =
494,481
composite factor = 2 × 3 × 13 × 31 × 409 =
988,962
32 factors (divisors)
What times what is 988,962?
What number multiplied by what number equals 988,962?
All the combinations of any two natural numbers whose product equals 988,962.
1 × 988,962 = 988,962
2 × 494,481 = 988,962
3 × 329,654 = 988,962
6 × 164,827 = 988,962
13 × 76,074 = 988,962
26 × 38,037 = 988,962
31 × 31,902 = 988,962
39 × 25,358 = 988,962
62 × 15,951 = 988,962
78 × 12,679 = 988,962
93 × 10,634 = 988,962
186 × 5,317 = 988,962
403 × 2,454 = 988,962
409 × 2,418 = 988,962
806 × 1,227 = 988,962
818 × 1,209 = 988,962
16 unique multiplications The final answer:
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