To find all the divisors of the number 88,770:
- 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 88,770:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
88,770 = 2 × 3 × 5 × 11 × 269
88,770 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 88,770
- 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
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 2 × 5 =
10
prime factor =
11
composite factor = 3 × 5 =
15
composite factor = 2 × 11 =
22
composite factor = 2 × 3 × 5 =
30
composite factor = 3 × 11 =
33
composite factor = 5 × 11 =
55
composite factor = 2 × 3 × 11 =
66
composite factor = 2 × 5 × 11 =
110
composite factor = 3 × 5 × 11 =
165
prime factor =
269
This list continues below...
... This list continues from above
composite factor = 2 × 3 × 5 × 11 =
330
composite factor = 2 × 269 =
538
composite factor = 3 × 269 =
807
composite factor = 5 × 269 =
1,345
composite factor = 2 × 3 × 269 =
1,614
composite factor = 2 × 5 × 269 =
2,690
composite factor = 11 × 269 =
2,959
composite factor = 3 × 5 × 269 =
4,035
composite factor = 2 × 11 × 269 =
5,918
composite factor = 2 × 3 × 5 × 269 =
8,070
composite factor = 3 × 11 × 269 =
8,877
composite factor = 5 × 11 × 269 =
14,795
composite factor = 2 × 3 × 11 × 269 =
17,754
composite factor = 2 × 5 × 11 × 269 =
29,590
composite factor = 3 × 5 × 11 × 269 =
44,385
composite factor = 2 × 3 × 5 × 11 × 269 =
88,770
32 factors (divisors)
What times what is 88,770?
What number multiplied by what number equals 88,770?
All the combinations of any two natural numbers whose product equals 88,770.
1 × 88,770 = 88,770
2 × 44,385 = 88,770
3 × 29,590 = 88,770
5 × 17,754 = 88,770
6 × 14,795 = 88,770
10 × 8,877 = 88,770
11 × 8,070 = 88,770
15 × 5,918 = 88,770
22 × 4,035 = 88,770
30 × 2,959 = 88,770
33 × 2,690 = 88,770
55 × 1,614 = 88,770
66 × 1,345 = 88,770
110 × 807 = 88,770
165 × 538 = 88,770
269 × 330 = 88,770
16 unique multiplications The final answer:
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