To find all the divisors of the number 5,000,750:
- 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 5,000,750:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
5,000,750 = 2 × 53 × 83 × 241
5,000,750 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) × (3 + 1) × (1 + 1) × (1 + 1) = 2 × 4 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 5,000,750
- 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 =
5
composite factor = 2 × 5 =
10
composite factor = 5
2 =
25
composite factor = 2 × 5
2 =
50
prime factor =
83
composite factor = 5
3 =
125
composite factor = 2 × 83 =
166
prime factor =
241
composite factor = 2 × 5
3 =
250
composite factor = 5 × 83 =
415
composite factor = 2 × 241 =
482
composite factor = 2 × 5 × 83 =
830
composite factor = 5 × 241 =
1,205
composite factor = 5
2 × 83 =
2,075
This list continues below...
... This list continues from above
composite factor = 2 × 5 × 241 =
2,410
composite factor = 2 × 5
2 × 83 =
4,150
composite factor = 5
2 × 241 =
6,025
composite factor = 5
3 × 83 =
10,375
composite factor = 2 × 5
2 × 241 =
12,050
composite factor = 83 × 241 =
20,003
composite factor = 2 × 5
3 × 83 =
20,750
composite factor = 5
3 × 241 =
30,125
composite factor = 2 × 83 × 241 =
40,006
composite factor = 2 × 5
3 × 241 =
60,250
composite factor = 5 × 83 × 241 =
100,015
composite factor = 2 × 5 × 83 × 241 =
200,030
composite factor = 5
2 × 83 × 241 =
500,075
composite factor = 2 × 5
2 × 83 × 241 =
1,000,150
composite factor = 5
3 × 83 × 241 =
2,500,375
composite factor = 2 × 5
3 × 83 × 241 =
5,000,750
32 factors (divisors)
What times what is 5,000,750?
What number multiplied by what number equals 5,000,750?
All the combinations of any two natural numbers whose product equals 5,000,750.
1 × 5,000,750 = 5,000,750
2 × 2,500,375 = 5,000,750
5 × 1,000,150 = 5,000,750
10 × 500,075 = 5,000,750
25 × 200,030 = 5,000,750
50 × 100,015 = 5,000,750
83 × 60,250 = 5,000,750
125 × 40,006 = 5,000,750
166 × 30,125 = 5,000,750
241 × 20,750 = 5,000,750
250 × 20,003 = 5,000,750
415 × 12,050 = 5,000,750
482 × 10,375 = 5,000,750
830 × 6,025 = 5,000,750
1,205 × 4,150 = 5,000,750
2,075 × 2,410 = 5,000,750
16 unique multiplications The final answer:
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