To find all the divisors of the number 214,107,642:
- 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 214,107,642:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
214,107,642 = 2 × 32 × 7 × 107 × 15,881
214,107,642 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 = (1 + 1) × (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 3 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 214,107,642
- 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 × 3 =
6
prime factor =
7
composite factor = 3
2 =
9
composite factor = 2 × 7 =
14
composite factor = 2 × 3
2 =
18
composite factor = 3 × 7 =
21
composite factor = 2 × 3 × 7 =
42
composite factor = 3
2 × 7 =
63
prime factor =
107
composite factor = 2 × 3
2 × 7 =
126
composite factor = 2 × 107 =
214
composite factor = 3 × 107 =
321
composite factor = 2 × 3 × 107 =
642
composite factor = 7 × 107 =
749
composite factor = 3
2 × 107 =
963
composite factor = 2 × 7 × 107 =
1,498
composite factor = 2 × 3
2 × 107 =
1,926
composite factor = 3 × 7 × 107 =
2,247
composite factor = 2 × 3 × 7 × 107 =
4,494
composite factor = 3
2 × 7 × 107 =
6,741
composite factor = 2 × 3
2 × 7 × 107 =
13,482
This list continues below...
... This list continues from above
prime factor =
15,881
composite factor = 2 × 15,881 =
31,762
composite factor = 3 × 15,881 =
47,643
composite factor = 2 × 3 × 15,881 =
95,286
composite factor = 7 × 15,881 =
111,167
composite factor = 3
2 × 15,881 =
142,929
composite factor = 2 × 7 × 15,881 =
222,334
composite factor = 2 × 3
2 × 15,881 =
285,858
composite factor = 3 × 7 × 15,881 =
333,501
composite factor = 2 × 3 × 7 × 15,881 =
667,002
composite factor = 3
2 × 7 × 15,881 =
1,000,503
composite factor = 107 × 15,881 =
1,699,267
composite factor = 2 × 3
2 × 7 × 15,881 =
2,001,006
composite factor = 2 × 107 × 15,881 =
3,398,534
composite factor = 3 × 107 × 15,881 =
5,097,801
composite factor = 2 × 3 × 107 × 15,881 =
10,195,602
composite factor = 7 × 107 × 15,881 =
11,894,869
composite factor = 3
2 × 107 × 15,881 =
15,293,403
composite factor = 2 × 7 × 107 × 15,881 =
23,789,738
composite factor = 2 × 3
2 × 107 × 15,881 =
30,586,806
composite factor = 3 × 7 × 107 × 15,881 =
35,684,607
composite factor = 2 × 3 × 7 × 107 × 15,881 =
71,369,214
composite factor = 3
2 × 7 × 107 × 15,881 =
107,053,821
composite factor = 2 × 3
2 × 7 × 107 × 15,881 =
214,107,642
48 factors (divisors)
What times what is 214,107,642?
What number multiplied by what number equals 214,107,642?
All the combinations of any two natural numbers whose product equals 214,107,642.
1 × 214,107,642 = 214,107,642
2 × 107,053,821 = 214,107,642
3 × 71,369,214 = 214,107,642
6 × 35,684,607 = 214,107,642
7 × 30,586,806 = 214,107,642
9 × 23,789,738 = 214,107,642
14 × 15,293,403 = 214,107,642
18 × 11,894,869 = 214,107,642
21 × 10,195,602 = 214,107,642
42 × 5,097,801 = 214,107,642
63 × 3,398,534 = 214,107,642
107 × 2,001,006 = 214,107,642
126 × 1,699,267 = 214,107,642
214 × 1,000,503 = 214,107,642
321 × 667,002 = 214,107,642
642 × 333,501 = 214,107,642
749 × 285,858 = 214,107,642
963 × 222,334 = 214,107,642
1,498 × 142,929 = 214,107,642
1,926 × 111,167 = 214,107,642
2,247 × 95,286 = 214,107,642
4,494 × 47,643 = 214,107,642
6,741 × 31,762 = 214,107,642
13,482 × 15,881 = 214,107,642
24 unique multiplications The final answer:
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