To find all the divisors of the number 428,214,584:
- 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 428,214,584:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
428,214,584 = 23 × 7 × 241 × 31,729
428,214,584 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) × (1 + 1) × (1 + 1) × (1 + 1) = 4 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 428,214,584
- 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
composite factor = 2
2 =
4
prime factor =
7
composite factor = 2
3 =
8
composite factor = 2 × 7 =
14
composite factor = 2
2 × 7 =
28
composite factor = 2
3 × 7 =
56
prime factor =
241
composite factor = 2 × 241 =
482
composite factor = 2
2 × 241 =
964
composite factor = 7 × 241 =
1,687
composite factor = 2
3 × 241 =
1,928
composite factor = 2 × 7 × 241 =
3,374
composite factor = 2
2 × 7 × 241 =
6,748
composite factor = 2
3 × 7 × 241 =
13,496
This list continues below...
... This list continues from above
prime factor =
31,729
composite factor = 2 × 31,729 =
63,458
composite factor = 2
2 × 31,729 =
126,916
composite factor = 7 × 31,729 =
222,103
composite factor = 2
3 × 31,729 =
253,832
composite factor = 2 × 7 × 31,729 =
444,206
composite factor = 2
2 × 7 × 31,729 =
888,412
composite factor = 2
3 × 7 × 31,729 =
1,776,824
composite factor = 241 × 31,729 =
7,646,689
composite factor = 2 × 241 × 31,729 =
15,293,378
composite factor = 2
2 × 241 × 31,729 =
30,586,756
composite factor = 7 × 241 × 31,729 =
53,526,823
composite factor = 2
3 × 241 × 31,729 =
61,173,512
composite factor = 2 × 7 × 241 × 31,729 =
107,053,646
composite factor = 2
2 × 7 × 241 × 31,729 =
214,107,292
composite factor = 2
3 × 7 × 241 × 31,729 =
428,214,584
32 factors (divisors)
What times what is 428,214,584?
What number multiplied by what number equals 428,214,584?
All the combinations of any two natural numbers whose product equals 428,214,584.
1 × 428,214,584 = 428,214,584
2 × 214,107,292 = 428,214,584
4 × 107,053,646 = 428,214,584
7 × 61,173,512 = 428,214,584
8 × 53,526,823 = 428,214,584
14 × 30,586,756 = 428,214,584
28 × 15,293,378 = 428,214,584
56 × 7,646,689 = 428,214,584
241 × 1,776,824 = 428,214,584
482 × 888,412 = 428,214,584
964 × 444,206 = 428,214,584
1,687 × 253,832 = 428,214,584
1,928 × 222,103 = 428,214,584
3,374 × 126,916 = 428,214,584
6,748 × 63,458 = 428,214,584
13,496 × 31,729 = 428,214,584
16 unique multiplications The final answer:
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