To find all the divisors of the number 4,968,672:
- 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 4,968,672:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
4,968,672 = 25 × 3 × 73 × 709
4,968,672 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 4,968,672
- 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
composite factor = 2
3 × 3 =
24
composite factor = 2
5 =
32
composite factor = 2
4 × 3 =
48
prime factor =
73
composite factor = 2
5 × 3 =
96
composite factor = 2 × 73 =
146
composite factor = 3 × 73 =
219
composite factor = 2
2 × 73 =
292
composite factor = 2 × 3 × 73 =
438
composite factor = 2
3 × 73 =
584
prime factor =
709
composite factor = 2
2 × 3 × 73 =
876
composite factor = 2
4 × 73 =
1,168
composite factor = 2 × 709 =
1,418
composite factor = 2
3 × 3 × 73 =
1,752
composite factor = 3 × 709 =
2,127
This list continues below...
... This list continues from above
composite factor = 2
5 × 73 =
2,336
composite factor = 2
2 × 709 =
2,836
composite factor = 2
4 × 3 × 73 =
3,504
composite factor = 2 × 3 × 709 =
4,254
composite factor = 2
3 × 709 =
5,672
composite factor = 2
5 × 3 × 73 =
7,008
composite factor = 2
2 × 3 × 709 =
8,508
composite factor = 2
4 × 709 =
11,344
composite factor = 2
3 × 3 × 709 =
17,016
composite factor = 2
5 × 709 =
22,688
composite factor = 2
4 × 3 × 709 =
34,032
composite factor = 73 × 709 =
51,757
composite factor = 2
5 × 3 × 709 =
68,064
composite factor = 2 × 73 × 709 =
103,514
composite factor = 3 × 73 × 709 =
155,271
composite factor = 2
2 × 73 × 709 =
207,028
composite factor = 2 × 3 × 73 × 709 =
310,542
composite factor = 2
3 × 73 × 709 =
414,056
composite factor = 2
2 × 3 × 73 × 709 =
621,084
composite factor = 2
4 × 73 × 709 =
828,112
composite factor = 2
3 × 3 × 73 × 709 =
1,242,168
composite factor = 2
5 × 73 × 709 =
1,656,224
composite factor = 2
4 × 3 × 73 × 709 =
2,484,336
composite factor = 2
5 × 3 × 73 × 709 =
4,968,672
48 factors (divisors)
What times what is 4,968,672?
What number multiplied by what number equals 4,968,672?
All the combinations of any two natural numbers whose product equals 4,968,672.
1 × 4,968,672 = 4,968,672
2 × 2,484,336 = 4,968,672
3 × 1,656,224 = 4,968,672
4 × 1,242,168 = 4,968,672
6 × 828,112 = 4,968,672
8 × 621,084 = 4,968,672
12 × 414,056 = 4,968,672
16 × 310,542 = 4,968,672
24 × 207,028 = 4,968,672
32 × 155,271 = 4,968,672
48 × 103,514 = 4,968,672
73 × 68,064 = 4,968,672
96 × 51,757 = 4,968,672
146 × 34,032 = 4,968,672
219 × 22,688 = 4,968,672
292 × 17,016 = 4,968,672
438 × 11,344 = 4,968,672
584 × 8,508 = 4,968,672
709 × 7,008 = 4,968,672
876 × 5,672 = 4,968,672
1,168 × 4,254 = 4,968,672
1,418 × 3,504 = 4,968,672
1,752 × 2,836 = 4,968,672
2,127 × 2,336 = 4,968,672
24 unique multiplications The final answer:
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