To find all the divisors of the number 231,573,708:
- 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 231,573,708:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
231,573,708 = 22 × 33 × 67 × 32,003
231,573,708 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) × (3 + 1) × (1 + 1) × (1 + 1) = 3 × 4 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 231,573,708
- 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
prime factor =
3
composite factor = 2
2 =
4
composite factor = 2 × 3 =
6
composite factor = 3
2 =
9
composite factor = 2
2 × 3 =
12
composite factor = 2 × 3
2 =
18
composite factor = 3
3 =
27
composite factor = 2
2 × 3
2 =
36
composite factor = 2 × 3
3 =
54
prime factor =
67
composite factor = 2
2 × 3
3 =
108
composite factor = 2 × 67 =
134
composite factor = 3 × 67 =
201
composite factor = 2
2 × 67 =
268
composite factor = 2 × 3 × 67 =
402
composite factor = 3
2 × 67 =
603
composite factor = 2
2 × 3 × 67 =
804
composite factor = 2 × 3
2 × 67 =
1,206
composite factor = 3
3 × 67 =
1,809
composite factor = 2
2 × 3
2 × 67 =
2,412
composite factor = 2 × 3
3 × 67 =
3,618
composite factor = 2
2 × 3
3 × 67 =
7,236
This list continues below...
... This list continues from above
prime factor =
32,003
composite factor = 2 × 32,003 =
64,006
composite factor = 3 × 32,003 =
96,009
composite factor = 2
2 × 32,003 =
128,012
composite factor = 2 × 3 × 32,003 =
192,018
composite factor = 3
2 × 32,003 =
288,027
composite factor = 2
2 × 3 × 32,003 =
384,036
composite factor = 2 × 3
2 × 32,003 =
576,054
composite factor = 3
3 × 32,003 =
864,081
composite factor = 2
2 × 3
2 × 32,003 =
1,152,108
composite factor = 2 × 3
3 × 32,003 =
1,728,162
composite factor = 67 × 32,003 =
2,144,201
composite factor = 2
2 × 3
3 × 32,003 =
3,456,324
composite factor = 2 × 67 × 32,003 =
4,288,402
composite factor = 3 × 67 × 32,003 =
6,432,603
composite factor = 2
2 × 67 × 32,003 =
8,576,804
composite factor = 2 × 3 × 67 × 32,003 =
12,865,206
composite factor = 3
2 × 67 × 32,003 =
19,297,809
composite factor = 2
2 × 3 × 67 × 32,003 =
25,730,412
composite factor = 2 × 3
2 × 67 × 32,003 =
38,595,618
composite factor = 3
3 × 67 × 32,003 =
57,893,427
composite factor = 2
2 × 3
2 × 67 × 32,003 =
77,191,236
composite factor = 2 × 3
3 × 67 × 32,003 =
115,786,854
composite factor = 2
2 × 3
3 × 67 × 32,003 =
231,573,708
48 factors (divisors)
What times what is 231,573,708?
What number multiplied by what number equals 231,573,708?
All the combinations of any two natural numbers whose product equals 231,573,708.
1 × 231,573,708 = 231,573,708
2 × 115,786,854 = 231,573,708
3 × 77,191,236 = 231,573,708
4 × 57,893,427 = 231,573,708
6 × 38,595,618 = 231,573,708
9 × 25,730,412 = 231,573,708
12 × 19,297,809 = 231,573,708
18 × 12,865,206 = 231,573,708
27 × 8,576,804 = 231,573,708
36 × 6,432,603 = 231,573,708
54 × 4,288,402 = 231,573,708
67 × 3,456,324 = 231,573,708
108 × 2,144,201 = 231,573,708
134 × 1,728,162 = 231,573,708
201 × 1,152,108 = 231,573,708
268 × 864,081 = 231,573,708
402 × 576,054 = 231,573,708
603 × 384,036 = 231,573,708
804 × 288,027 = 231,573,708
1,206 × 192,018 = 231,573,708
1,809 × 128,012 = 231,573,708
2,412 × 96,009 = 231,573,708
3,618 × 64,006 = 231,573,708
7,236 × 32,003 = 231,573,708
24 unique multiplications The final answer:
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