To find all the divisors of the number 32,939,580:
- 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 32,939,580:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
32,939,580 = 22 × 3 × 5 × 179 × 3,067
32,939,580 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) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 32,939,580
- 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 = 2 × 3 × 5 =
30
composite factor = 2
2 × 3 × 5 =
60
prime factor =
179
composite factor = 2 × 179 =
358
composite factor = 3 × 179 =
537
composite factor = 2
2 × 179 =
716
composite factor = 5 × 179 =
895
composite factor = 2 × 3 × 179 =
1,074
composite factor = 2 × 5 × 179 =
1,790
composite factor = 2
2 × 3 × 179 =
2,148
composite factor = 3 × 5 × 179 =
2,685
prime factor =
3,067
composite factor = 2
2 × 5 × 179 =
3,580
composite factor = 2 × 3 × 5 × 179 =
5,370
This list continues below...
... This list continues from above
composite factor = 2 × 3,067 =
6,134
composite factor = 3 × 3,067 =
9,201
composite factor = 2
2 × 3 × 5 × 179 =
10,740
composite factor = 2
2 × 3,067 =
12,268
composite factor = 5 × 3,067 =
15,335
composite factor = 2 × 3 × 3,067 =
18,402
composite factor = 2 × 5 × 3,067 =
30,670
composite factor = 2
2 × 3 × 3,067 =
36,804
composite factor = 3 × 5 × 3,067 =
46,005
composite factor = 2
2 × 5 × 3,067 =
61,340
composite factor = 2 × 3 × 5 × 3,067 =
92,010
composite factor = 2
2 × 3 × 5 × 3,067 =
184,020
composite factor = 179 × 3,067 =
548,993
composite factor = 2 × 179 × 3,067 =
1,097,986
composite factor = 3 × 179 × 3,067 =
1,646,979
composite factor = 2
2 × 179 × 3,067 =
2,195,972
composite factor = 5 × 179 × 3,067 =
2,744,965
composite factor = 2 × 3 × 179 × 3,067 =
3,293,958
composite factor = 2 × 5 × 179 × 3,067 =
5,489,930
composite factor = 2
2 × 3 × 179 × 3,067 =
6,587,916
composite factor = 3 × 5 × 179 × 3,067 =
8,234,895
composite factor = 2
2 × 5 × 179 × 3,067 =
10,979,860
composite factor = 2 × 3 × 5 × 179 × 3,067 =
16,469,790
composite factor = 2
2 × 3 × 5 × 179 × 3,067 =
32,939,580
48 factors (divisors)
What times what is 32,939,580?
What number multiplied by what number equals 32,939,580?
All the combinations of any two natural numbers whose product equals 32,939,580.
1 × 32,939,580 = 32,939,580
2 × 16,469,790 = 32,939,580
3 × 10,979,860 = 32,939,580
4 × 8,234,895 = 32,939,580
5 × 6,587,916 = 32,939,580
6 × 5,489,930 = 32,939,580
10 × 3,293,958 = 32,939,580
12 × 2,744,965 = 32,939,580
15 × 2,195,972 = 32,939,580
20 × 1,646,979 = 32,939,580
30 × 1,097,986 = 32,939,580
60 × 548,993 = 32,939,580
179 × 184,020 = 32,939,580
358 × 92,010 = 32,939,580
537 × 61,340 = 32,939,580
716 × 46,005 = 32,939,580
895 × 36,804 = 32,939,580
1,074 × 30,670 = 32,939,580
1,790 × 18,402 = 32,939,580
2,148 × 15,335 = 32,939,580
2,685 × 12,268 = 32,939,580
3,067 × 10,740 = 32,939,580
3,580 × 9,201 = 32,939,580
5,370 × 6,134 = 32,939,580
24 unique multiplications The final answer:
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