To find all the divisors of the number 30,949,704:
- 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 30,949,704:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
30,949,704 = 23 × 32 × 83 × 5,179
30,949,704 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 = (3 + 1) × (2 + 1) × (1 + 1) × (1 + 1) = 4 × 3 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 30,949,704
- 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 = 2
3 =
8
composite factor = 3
2 =
9
composite factor = 2
2 × 3 =
12
composite factor = 2 × 3
2 =
18
composite factor = 2
3 × 3 =
24
composite factor = 2
2 × 3
2 =
36
composite factor = 2
3 × 3
2 =
72
prime factor =
83
composite factor = 2 × 83 =
166
composite factor = 3 × 83 =
249
composite factor = 2
2 × 83 =
332
composite factor = 2 × 3 × 83 =
498
composite factor = 2
3 × 83 =
664
composite factor = 3
2 × 83 =
747
composite factor = 2
2 × 3 × 83 =
996
composite factor = 2 × 3
2 × 83 =
1,494
composite factor = 2
3 × 3 × 83 =
1,992
composite factor = 2
2 × 3
2 × 83 =
2,988
prime factor =
5,179
This list continues below...
... This list continues from above
composite factor = 2
3 × 3
2 × 83 =
5,976
composite factor = 2 × 5,179 =
10,358
composite factor = 3 × 5,179 =
15,537
composite factor = 2
2 × 5,179 =
20,716
composite factor = 2 × 3 × 5,179 =
31,074
composite factor = 2
3 × 5,179 =
41,432
composite factor = 3
2 × 5,179 =
46,611
composite factor = 2
2 × 3 × 5,179 =
62,148
composite factor = 2 × 3
2 × 5,179 =
93,222
composite factor = 2
3 × 3 × 5,179 =
124,296
composite factor = 2
2 × 3
2 × 5,179 =
186,444
composite factor = 2
3 × 3
2 × 5,179 =
372,888
composite factor = 83 × 5,179 =
429,857
composite factor = 2 × 83 × 5,179 =
859,714
composite factor = 3 × 83 × 5,179 =
1,289,571
composite factor = 2
2 × 83 × 5,179 =
1,719,428
composite factor = 2 × 3 × 83 × 5,179 =
2,579,142
composite factor = 2
3 × 83 × 5,179 =
3,438,856
composite factor = 3
2 × 83 × 5,179 =
3,868,713
composite factor = 2
2 × 3 × 83 × 5,179 =
5,158,284
composite factor = 2 × 3
2 × 83 × 5,179 =
7,737,426
composite factor = 2
3 × 3 × 83 × 5,179 =
10,316,568
composite factor = 2
2 × 3
2 × 83 × 5,179 =
15,474,852
composite factor = 2
3 × 3
2 × 83 × 5,179 =
30,949,704
48 factors (divisors)
What times what is 30,949,704?
What number multiplied by what number equals 30,949,704?
All the combinations of any two natural numbers whose product equals 30,949,704.
1 × 30,949,704 = 30,949,704
2 × 15,474,852 = 30,949,704
3 × 10,316,568 = 30,949,704
4 × 7,737,426 = 30,949,704
6 × 5,158,284 = 30,949,704
8 × 3,868,713 = 30,949,704
9 × 3,438,856 = 30,949,704
12 × 2,579,142 = 30,949,704
18 × 1,719,428 = 30,949,704
24 × 1,289,571 = 30,949,704
36 × 859,714 = 30,949,704
72 × 429,857 = 30,949,704
83 × 372,888 = 30,949,704
166 × 186,444 = 30,949,704
249 × 124,296 = 30,949,704
332 × 93,222 = 30,949,704
498 × 62,148 = 30,949,704
664 × 46,611 = 30,949,704
747 × 41,432 = 30,949,704
996 × 31,074 = 30,949,704
1,494 × 20,716 = 30,949,704
1,992 × 15,537 = 30,949,704
2,988 × 10,358 = 30,949,704
5,179 × 5,976 = 30,949,704
24 unique multiplications The final answer:
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