To find all the divisors of the number 92,700:
- 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 92,700:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
92,700 = 22 × 32 × 52 × 103
92,700 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 = (2 + 1) × (2 + 1) × (2 + 1) × (1 + 1) = 3 × 3 × 3 × 2 = 54
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 92,700
- 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
prime factor =
3
composite factor = 2
2 =
4
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 3
2 =
9
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2 × 3
2 =
18
composite factor = 2
2 × 5 =
20
composite factor = 5
2 =
25
composite factor = 2 × 3 × 5 =
30
composite factor = 2
2 × 3
2 =
36
composite factor = 3
2 × 5 =
45
composite factor = 2 × 5
2 =
50
composite factor = 2
2 × 3 × 5 =
60
composite factor = 3 × 5
2 =
75
composite factor = 2 × 3
2 × 5 =
90
composite factor = 2
2 × 5
2 =
100
prime factor =
103
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2
2 × 3
2 × 5 =
180
composite factor = 2 × 103 =
206
composite factor = 3
2 × 5
2 =
225
composite factor = 2
2 × 3 × 5
2 =
300
This list continues below...
... This list continues from above
composite factor = 3 × 103 =
309
composite factor = 2
2 × 103 =
412
composite factor = 2 × 3
2 × 5
2 =
450
composite factor = 5 × 103 =
515
composite factor = 2 × 3 × 103 =
618
composite factor = 2
2 × 3
2 × 5
2 =
900
composite factor = 3
2 × 103 =
927
composite factor = 2 × 5 × 103 =
1,030
composite factor = 2
2 × 3 × 103 =
1,236
composite factor = 3 × 5 × 103 =
1,545
composite factor = 2 × 3
2 × 103 =
1,854
composite factor = 2
2 × 5 × 103 =
2,060
composite factor = 5
2 × 103 =
2,575
composite factor = 2 × 3 × 5 × 103 =
3,090
composite factor = 2
2 × 3
2 × 103 =
3,708
composite factor = 3
2 × 5 × 103 =
4,635
composite factor = 2 × 5
2 × 103 =
5,150
composite factor = 2
2 × 3 × 5 × 103 =
6,180
composite factor = 3 × 5
2 × 103 =
7,725
composite factor = 2 × 3
2 × 5 × 103 =
9,270
composite factor = 2
2 × 5
2 × 103 =
10,300
composite factor = 2 × 3 × 5
2 × 103 =
15,450
composite factor = 2
2 × 3
2 × 5 × 103 =
18,540
composite factor = 3
2 × 5
2 × 103 =
23,175
composite factor = 2
2 × 3 × 5
2 × 103 =
30,900
composite factor = 2 × 3
2 × 5
2 × 103 =
46,350
composite factor = 2
2 × 3
2 × 5
2 × 103 =
92,700
54 factors (divisors)
What times what is 92,700?
What number multiplied by what number equals 92,700?
All the combinations of any two natural numbers whose product equals 92,700.
1 × 92,700 = 92,700
2 × 46,350 = 92,700
3 × 30,900 = 92,700
4 × 23,175 = 92,700
5 × 18,540 = 92,700
6 × 15,450 = 92,700
9 × 10,300 = 92,700
10 × 9,270 = 92,700
12 × 7,725 = 92,700
15 × 6,180 = 92,700
18 × 5,150 = 92,700
20 × 4,635 = 92,700
25 × 3,708 = 92,700
30 × 3,090 = 92,700
36 × 2,575 = 92,700
45 × 2,060 = 92,700
50 × 1,854 = 92,700
60 × 1,545 = 92,700
75 × 1,236 = 92,700
90 × 1,030 = 92,700
100 × 927 = 92,700
103 × 900 = 92,700
150 × 618 = 92,700
180 × 515 = 92,700
206 × 450 = 92,700
225 × 412 = 92,700
300 × 309 = 92,700
27 unique multiplications The final answer:
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