To find all the divisors of the number 60,940,500:
- 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 60,940,500:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
60,940,500 = 22 × 3 × 53 × 40,627
60,940,500 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) × (3 + 1) × (1 + 1) = 3 × 2 × 4 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 60,940,500
- 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 = 2 × 3 × 5
3 =
750
composite factor = 2
2 × 3 × 5
3 =
1,500
This list continues below...
... This list continues from above
prime factor =
40,627
composite factor = 2 × 40,627 =
81,254
composite factor = 3 × 40,627 =
121,881
composite factor = 2
2 × 40,627 =
162,508
composite factor = 5 × 40,627 =
203,135
composite factor = 2 × 3 × 40,627 =
243,762
composite factor = 2 × 5 × 40,627 =
406,270
composite factor = 2
2 × 3 × 40,627 =
487,524
composite factor = 3 × 5 × 40,627 =
609,405
composite factor = 2
2 × 5 × 40,627 =
812,540
composite factor = 5
2 × 40,627 =
1,015,675
composite factor = 2 × 3 × 5 × 40,627 =
1,218,810
composite factor = 2 × 5
2 × 40,627 =
2,031,350
composite factor = 2
2 × 3 × 5 × 40,627 =
2,437,620
composite factor = 3 × 5
2 × 40,627 =
3,047,025
composite factor = 2
2 × 5
2 × 40,627 =
4,062,700
composite factor = 5
3 × 40,627 =
5,078,375
composite factor = 2 × 3 × 5
2 × 40,627 =
6,094,050
composite factor = 2 × 5
3 × 40,627 =
10,156,750
composite factor = 2
2 × 3 × 5
2 × 40,627 =
12,188,100
composite factor = 3 × 5
3 × 40,627 =
15,235,125
composite factor = 2
2 × 5
3 × 40,627 =
20,313,500
composite factor = 2 × 3 × 5
3 × 40,627 =
30,470,250
composite factor = 2
2 × 3 × 5
3 × 40,627 =
60,940,500
48 factors (divisors)
What times what is 60,940,500?
What number multiplied by what number equals 60,940,500?
All the combinations of any two natural numbers whose product equals 60,940,500.
1 × 60,940,500 = 60,940,500
2 × 30,470,250 = 60,940,500
3 × 20,313,500 = 60,940,500
4 × 15,235,125 = 60,940,500
5 × 12,188,100 = 60,940,500
6 × 10,156,750 = 60,940,500
10 × 6,094,050 = 60,940,500
12 × 5,078,375 = 60,940,500
15 × 4,062,700 = 60,940,500
20 × 3,047,025 = 60,940,500
25 × 2,437,620 = 60,940,500
30 × 2,031,350 = 60,940,500
50 × 1,218,810 = 60,940,500
60 × 1,015,675 = 60,940,500
75 × 812,540 = 60,940,500
100 × 609,405 = 60,940,500
125 × 487,524 = 60,940,500
150 × 406,270 = 60,940,500
250 × 243,762 = 60,940,500
300 × 203,135 = 60,940,500
375 × 162,508 = 60,940,500
500 × 121,881 = 60,940,500
750 × 81,254 = 60,940,500
1,500 × 40,627 = 60,940,500
24 unique multiplications The final answer:
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