To find all the divisors of the number 24,300:
- 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 24,300:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
24,300 = 22 × 35 × 52
24,300 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) × (5 + 1) × (2 + 1) = 3 × 6 × 3 = 54
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 24,300
- 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 = 3
3 =
27
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 × 3
3 =
54
composite factor = 2
2 × 3 × 5 =
60
composite factor = 3 × 5
2 =
75
composite factor = 3
4 =
81
composite factor = 2 × 3
2 × 5 =
90
composite factor = 2
2 × 5
2 =
100
composite factor = 2
2 × 3
3 =
108
composite factor = 3
3 × 5 =
135
composite factor = 2 × 3 × 5
2 =
150
This list continues below...
... This list continues from above
composite factor = 2 × 3
4 =
162
composite factor = 2
2 × 3
2 × 5 =
180
composite factor = 3
2 × 5
2 =
225
composite factor = 3
5 =
243
composite factor = 2 × 3
3 × 5 =
270
composite factor = 2
2 × 3 × 5
2 =
300
composite factor = 2
2 × 3
4 =
324
composite factor = 3
4 × 5 =
405
composite factor = 2 × 3
2 × 5
2 =
450
composite factor = 2 × 3
5 =
486
composite factor = 2
2 × 3
3 × 5 =
540
composite factor = 3
3 × 5
2 =
675
composite factor = 2 × 3
4 × 5 =
810
composite factor = 2
2 × 3
2 × 5
2 =
900
composite factor = 2
2 × 3
5 =
972
composite factor = 3
5 × 5 =
1,215
composite factor = 2 × 3
3 × 5
2 =
1,350
composite factor = 2
2 × 3
4 × 5 =
1,620
composite factor = 3
4 × 5
2 =
2,025
composite factor = 2 × 3
5 × 5 =
2,430
composite factor = 2
2 × 3
3 × 5
2 =
2,700
composite factor = 2 × 3
4 × 5
2 =
4,050
composite factor = 2
2 × 3
5 × 5 =
4,860
composite factor = 3
5 × 5
2 =
6,075
composite factor = 2
2 × 3
4 × 5
2 =
8,100
composite factor = 2 × 3
5 × 5
2 =
12,150
composite factor = 2
2 × 3
5 × 5
2 =
24,300
54 factors (divisors)
What times what is 24,300?
What number multiplied by what number equals 24,300?
All the combinations of any two natural numbers whose product equals 24,300.
1 × 24,300 = 24,300
2 × 12,150 = 24,300
3 × 8,100 = 24,300
4 × 6,075 = 24,300
5 × 4,860 = 24,300
6 × 4,050 = 24,300
9 × 2,700 = 24,300
10 × 2,430 = 24,300
12 × 2,025 = 24,300
15 × 1,620 = 24,300
18 × 1,350 = 24,300
20 × 1,215 = 24,300
25 × 972 = 24,300
27 × 900 = 24,300
30 × 810 = 24,300
36 × 675 = 24,300
45 × 540 = 24,300
50 × 486 = 24,300
54 × 450 = 24,300
60 × 405 = 24,300
75 × 324 = 24,300
81 × 300 = 24,300
90 × 270 = 24,300
100 × 243 = 24,300
108 × 225 = 24,300
135 × 180 = 24,300
150 × 162 = 24,300
27 unique multiplications The final answer:
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