To find all the divisors of the number 45,074,708:
- 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 45,074,708:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
45,074,708 = 22 × 72 × 151 × 1,523
45,074,708 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) × (2 + 1) × (1 + 1) × (1 + 1) = 3 × 3 × 2 × 2 = 36
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 45,074,708
- 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
composite factor = 2
2 =
4
prime factor =
7
composite factor = 2 × 7 =
14
composite factor = 2
2 × 7 =
28
composite factor = 7
2 =
49
composite factor = 2 × 7
2 =
98
prime factor =
151
composite factor = 2
2 × 7
2 =
196
composite factor = 2 × 151 =
302
composite factor = 2
2 × 151 =
604
composite factor = 7 × 151 =
1,057
prime factor =
1,523
composite factor = 2 × 7 × 151 =
2,114
composite factor = 2 × 1,523 =
3,046
composite factor = 2
2 × 7 × 151 =
4,228
composite factor = 2
2 × 1,523 =
6,092
This list continues below...
... This list continues from above
composite factor = 7
2 × 151 =
7,399
composite factor = 7 × 1,523 =
10,661
composite factor = 2 × 7
2 × 151 =
14,798
composite factor = 2 × 7 × 1,523 =
21,322
composite factor = 2
2 × 7
2 × 151 =
29,596
composite factor = 2
2 × 7 × 1,523 =
42,644
composite factor = 7
2 × 1,523 =
74,627
composite factor = 2 × 7
2 × 1,523 =
149,254
composite factor = 151 × 1,523 =
229,973
composite factor = 2
2 × 7
2 × 1,523 =
298,508
composite factor = 2 × 151 × 1,523 =
459,946
composite factor = 2
2 × 151 × 1,523 =
919,892
composite factor = 7 × 151 × 1,523 =
1,609,811
composite factor = 2 × 7 × 151 × 1,523 =
3,219,622
composite factor = 2
2 × 7 × 151 × 1,523 =
6,439,244
composite factor = 7
2 × 151 × 1,523 =
11,268,677
composite factor = 2 × 7
2 × 151 × 1,523 =
22,537,354
composite factor = 2
2 × 7
2 × 151 × 1,523 =
45,074,708
36 factors (divisors)
What times what is 45,074,708?
What number multiplied by what number equals 45,074,708?
All the combinations of any two natural numbers whose product equals 45,074,708.
1 × 45,074,708 = 45,074,708
2 × 22,537,354 = 45,074,708
4 × 11,268,677 = 45,074,708
7 × 6,439,244 = 45,074,708
14 × 3,219,622 = 45,074,708
28 × 1,609,811 = 45,074,708
49 × 919,892 = 45,074,708
98 × 459,946 = 45,074,708
151 × 298,508 = 45,074,708
196 × 229,973 = 45,074,708
302 × 149,254 = 45,074,708
604 × 74,627 = 45,074,708
1,057 × 42,644 = 45,074,708
1,523 × 29,596 = 45,074,708
2,114 × 21,322 = 45,074,708
3,046 × 14,798 = 45,074,708
4,228 × 10,661 = 45,074,708
6,092 × 7,399 = 45,074,708
18 unique multiplications The final answer:
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