To find all the divisors of the number 60,975,670:
- 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 60,975,670:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
60,975,670 = 2 × 5 × 7 × 821 × 1,061
60,975,670 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) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 60,975,670
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- 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
prime factor =
7
composite factor = 2 × 5 =
10
composite factor = 2 × 7 =
14
composite factor = 5 × 7 =
35
composite factor = 2 × 5 × 7 =
70
prime factor =
821
prime factor =
1,061
composite factor = 2 × 821 =
1,642
composite factor = 2 × 1,061 =
2,122
composite factor = 5 × 821 =
4,105
composite factor = 5 × 1,061 =
5,305
composite factor = 7 × 821 =
5,747
composite factor = 7 × 1,061 =
7,427
This list continues below...
... This list continues from above
composite factor = 2 × 5 × 821 =
8,210
composite factor = 2 × 5 × 1,061 =
10,610
composite factor = 2 × 7 × 821 =
11,494
composite factor = 2 × 7 × 1,061 =
14,854
composite factor = 5 × 7 × 821 =
28,735
composite factor = 5 × 7 × 1,061 =
37,135
composite factor = 2 × 5 × 7 × 821 =
57,470
composite factor = 2 × 5 × 7 × 1,061 =
74,270
composite factor = 821 × 1,061 =
871,081
composite factor = 2 × 821 × 1,061 =
1,742,162
composite factor = 5 × 821 × 1,061 =
4,355,405
composite factor = 7 × 821 × 1,061 =
6,097,567
composite factor = 2 × 5 × 821 × 1,061 =
8,710,810
composite factor = 2 × 7 × 821 × 1,061 =
12,195,134
composite factor = 5 × 7 × 821 × 1,061 =
30,487,835
composite factor = 2 × 5 × 7 × 821 × 1,061 =
60,975,670
32 factors (divisors)
What times what is 60,975,670?
What number multiplied by what number equals 60,975,670?
All the combinations of any two natural numbers whose product equals 60,975,670.
1 × 60,975,670 = 60,975,670
2 × 30,487,835 = 60,975,670
5 × 12,195,134 = 60,975,670
7 × 8,710,810 = 60,975,670
10 × 6,097,567 = 60,975,670
14 × 4,355,405 = 60,975,670
35 × 1,742,162 = 60,975,670
70 × 871,081 = 60,975,670
821 × 74,270 = 60,975,670
1,061 × 57,470 = 60,975,670
1,642 × 37,135 = 60,975,670
2,122 × 28,735 = 60,975,670
4,105 × 14,854 = 60,975,670
5,305 × 11,494 = 60,975,670
5,747 × 10,610 = 60,975,670
7,427 × 8,210 = 60,975,670
16 unique multiplications The final answer:
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