To find all the divisors of the number 23,437,500:
- 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 23,437,500:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
23,437,500 = 22 × 3 × 59
23,437,500 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) × (1 + 1) × (9 + 1) = 3 × 2 × 10 = 60
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 23,437,500
- 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 = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
2 × 5 =
20
composite factor = 5
2 =
25
composite factor = 2 × 3 × 5 =
30
composite factor = 2 × 5
2 =
50
composite factor = 2
2 × 3 × 5 =
60
composite factor = 3 × 5
2 =
75
composite factor = 2
2 × 5
2 =
100
composite factor = 5
3 =
125
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2 × 5
3 =
250
composite factor = 2
2 × 3 × 5
2 =
300
composite factor = 3 × 5
3 =
375
composite factor = 2
2 × 5
3 =
500
composite factor = 5
4 =
625
composite factor = 2 × 3 × 5
3 =
750
composite factor = 2 × 5
4 =
1,250
composite factor = 2
2 × 3 × 5
3 =
1,500
composite factor = 3 × 5
4 =
1,875
composite factor = 2
2 × 5
4 =
2,500
composite factor = 5
5 =
3,125
composite factor = 2 × 3 × 5
4 =
3,750
This list continues below...
... This list continues from above
composite factor = 2 × 5
5 =
6,250
composite factor = 2
2 × 3 × 5
4 =
7,500
composite factor = 3 × 5
5 =
9,375
composite factor = 2
2 × 5
5 =
12,500
composite factor = 5
6 =
15,625
composite factor = 2 × 3 × 5
5 =
18,750
composite factor = 2 × 5
6 =
31,250
composite factor = 2
2 × 3 × 5
5 =
37,500
composite factor = 3 × 5
6 =
46,875
composite factor = 2
2 × 5
6 =
62,500
composite factor = 5
7 =
78,125
composite factor = 2 × 3 × 5
6 =
93,750
composite factor = 2 × 5
7 =
156,250
composite factor = 2
2 × 3 × 5
6 =
187,500
composite factor = 3 × 5
7 =
234,375
composite factor = 2
2 × 5
7 =
312,500
composite factor = 5
8 =
390,625
composite factor = 2 × 3 × 5
7 =
468,750
composite factor = 2 × 5
8 =
781,250
composite factor = 2
2 × 3 × 5
7 =
937,500
composite factor = 3 × 5
8 =
1,171,875
composite factor = 2
2 × 5
8 =
1,562,500
composite factor = 5
9 =
1,953,125
composite factor = 2 × 3 × 5
8 =
2,343,750
composite factor = 2 × 5
9 =
3,906,250
composite factor = 2
2 × 3 × 5
8 =
4,687,500
composite factor = 3 × 5
9 =
5,859,375
composite factor = 2
2 × 5
9 =
7,812,500
composite factor = 2 × 3 × 5
9 =
11,718,750
composite factor = 2
2 × 3 × 5
9 =
23,437,500
60 factors (divisors)
What times what is 23,437,500?
What number multiplied by what number equals 23,437,500?
All the combinations of any two natural numbers whose product equals 23,437,500.
1 × 23,437,500 = 23,437,500
2 × 11,718,750 = 23,437,500
3 × 7,812,500 = 23,437,500
4 × 5,859,375 = 23,437,500
5 × 4,687,500 = 23,437,500
6 × 3,906,250 = 23,437,500
10 × 2,343,750 = 23,437,500
12 × 1,953,125 = 23,437,500
15 × 1,562,500 = 23,437,500
20 × 1,171,875 = 23,437,500
25 × 937,500 = 23,437,500
30 × 781,250 = 23,437,500
50 × 468,750 = 23,437,500
60 × 390,625 = 23,437,500
75 × 312,500 = 23,437,500
100 × 234,375 = 23,437,500
125 × 187,500 = 23,437,500
150 × 156,250 = 23,437,500
250 × 93,750 = 23,437,500
300 × 78,125 = 23,437,500
375 × 62,500 = 23,437,500
500 × 46,875 = 23,437,500
625 × 37,500 = 23,437,500
750 × 31,250 = 23,437,500
1,250 × 18,750 = 23,437,500
1,500 × 15,625 = 23,437,500
1,875 × 12,500 = 23,437,500
2,500 × 9,375 = 23,437,500
3,125 × 7,500 = 23,437,500
3,750 × 6,250 = 23,437,500
30 unique multiplications The final answer:
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