To find all the divisors of the number 8,928,672:
- 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 8,928,672:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
8,928,672 = 25 × 3 × 17 × 5,471
8,928,672 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 = (5 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 6 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 8,928,672
- 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 = 2
2 × 3 =
12
composite factor = 2
4 =
16
prime factor =
17
composite factor = 2
3 × 3 =
24
composite factor = 2
5 =
32
composite factor = 2 × 17 =
34
composite factor = 2
4 × 3 =
48
composite factor = 3 × 17 =
51
composite factor = 2
2 × 17 =
68
composite factor = 2
5 × 3 =
96
composite factor = 2 × 3 × 17 =
102
composite factor = 2
3 × 17 =
136
composite factor = 2
2 × 3 × 17 =
204
composite factor = 2
4 × 17 =
272
composite factor = 2
3 × 3 × 17 =
408
composite factor = 2
5 × 17 =
544
composite factor = 2
4 × 3 × 17 =
816
composite factor = 2
5 × 3 × 17 =
1,632
This list continues below...
... This list continues from above
prime factor =
5,471
composite factor = 2 × 5,471 =
10,942
composite factor = 3 × 5,471 =
16,413
composite factor = 2
2 × 5,471 =
21,884
composite factor = 2 × 3 × 5,471 =
32,826
composite factor = 2
3 × 5,471 =
43,768
composite factor = 2
2 × 3 × 5,471 =
65,652
composite factor = 2
4 × 5,471 =
87,536
composite factor = 17 × 5,471 =
93,007
composite factor = 2
3 × 3 × 5,471 =
131,304
composite factor = 2
5 × 5,471 =
175,072
composite factor = 2 × 17 × 5,471 =
186,014
composite factor = 2
4 × 3 × 5,471 =
262,608
composite factor = 3 × 17 × 5,471 =
279,021
composite factor = 2
2 × 17 × 5,471 =
372,028
composite factor = 2
5 × 3 × 5,471 =
525,216
composite factor = 2 × 3 × 17 × 5,471 =
558,042
composite factor = 2
3 × 17 × 5,471 =
744,056
composite factor = 2
2 × 3 × 17 × 5,471 =
1,116,084
composite factor = 2
4 × 17 × 5,471 =
1,488,112
composite factor = 2
3 × 3 × 17 × 5,471 =
2,232,168
composite factor = 2
5 × 17 × 5,471 =
2,976,224
composite factor = 2
4 × 3 × 17 × 5,471 =
4,464,336
composite factor = 2
5 × 3 × 17 × 5,471 =
8,928,672
48 factors (divisors)
What times what is 8,928,672?
What number multiplied by what number equals 8,928,672?
All the combinations of any two natural numbers whose product equals 8,928,672.
1 × 8,928,672 = 8,928,672
2 × 4,464,336 = 8,928,672
3 × 2,976,224 = 8,928,672
4 × 2,232,168 = 8,928,672
6 × 1,488,112 = 8,928,672
8 × 1,116,084 = 8,928,672
12 × 744,056 = 8,928,672
16 × 558,042 = 8,928,672
17 × 525,216 = 8,928,672
24 × 372,028 = 8,928,672
32 × 279,021 = 8,928,672
34 × 262,608 = 8,928,672
48 × 186,014 = 8,928,672
51 × 175,072 = 8,928,672
68 × 131,304 = 8,928,672
96 × 93,007 = 8,928,672
102 × 87,536 = 8,928,672
136 × 65,652 = 8,928,672
204 × 43,768 = 8,928,672
272 × 32,826 = 8,928,672
408 × 21,884 = 8,928,672
544 × 16,413 = 8,928,672
816 × 10,942 = 8,928,672
1,632 × 5,471 = 8,928,672
24 unique multiplications The final answer:
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