To find all the divisors of the number 214,104,690:
- 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 214,104,690:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
214,104,690 = 2 × 32 × 5 × 439 × 5,419
214,104,690 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 214,104,690
- 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
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 3
2 =
9
composite factor = 2 × 5 =
10
composite factor = 3 × 5 =
15
composite factor = 2 × 3
2 =
18
composite factor = 2 × 3 × 5 =
30
composite factor = 3
2 × 5 =
45
composite factor = 2 × 3
2 × 5 =
90
prime factor =
439
composite factor = 2 × 439 =
878
composite factor = 3 × 439 =
1,317
composite factor = 5 × 439 =
2,195
composite factor = 2 × 3 × 439 =
2,634
composite factor = 3
2 × 439 =
3,951
composite factor = 2 × 5 × 439 =
4,390
prime factor =
5,419
composite factor = 3 × 5 × 439 =
6,585
composite factor = 2 × 3
2 × 439 =
7,902
composite factor = 2 × 5,419 =
10,838
composite factor = 2 × 3 × 5 × 439 =
13,170
This list continues below...
... This list continues from above
composite factor = 3 × 5,419 =
16,257
composite factor = 3
2 × 5 × 439 =
19,755
composite factor = 5 × 5,419 =
27,095
composite factor = 2 × 3 × 5,419 =
32,514
composite factor = 2 × 3
2 × 5 × 439 =
39,510
composite factor = 3
2 × 5,419 =
48,771
composite factor = 2 × 5 × 5,419 =
54,190
composite factor = 3 × 5 × 5,419 =
81,285
composite factor = 2 × 3
2 × 5,419 =
97,542
composite factor = 2 × 3 × 5 × 5,419 =
162,570
composite factor = 3
2 × 5 × 5,419 =
243,855
composite factor = 2 × 3
2 × 5 × 5,419 =
487,710
composite factor = 439 × 5,419 =
2,378,941
composite factor = 2 × 439 × 5,419 =
4,757,882
composite factor = 3 × 439 × 5,419 =
7,136,823
composite factor = 5 × 439 × 5,419 =
11,894,705
composite factor = 2 × 3 × 439 × 5,419 =
14,273,646
composite factor = 3
2 × 439 × 5,419 =
21,410,469
composite factor = 2 × 5 × 439 × 5,419 =
23,789,410
composite factor = 3 × 5 × 439 × 5,419 =
35,684,115
composite factor = 2 × 3
2 × 439 × 5,419 =
42,820,938
composite factor = 2 × 3 × 5 × 439 × 5,419 =
71,368,230
composite factor = 3
2 × 5 × 439 × 5,419 =
107,052,345
composite factor = 2 × 3
2 × 5 × 439 × 5,419 =
214,104,690
48 factors (divisors)
What times what is 214,104,690?
What number multiplied by what number equals 214,104,690?
All the combinations of any two natural numbers whose product equals 214,104,690.
1 × 214,104,690 = 214,104,690
2 × 107,052,345 = 214,104,690
3 × 71,368,230 = 214,104,690
5 × 42,820,938 = 214,104,690
6 × 35,684,115 = 214,104,690
9 × 23,789,410 = 214,104,690
10 × 21,410,469 = 214,104,690
15 × 14,273,646 = 214,104,690
18 × 11,894,705 = 214,104,690
30 × 7,136,823 = 214,104,690
45 × 4,757,882 = 214,104,690
90 × 2,378,941 = 214,104,690
439 × 487,710 = 214,104,690
878 × 243,855 = 214,104,690
1,317 × 162,570 = 214,104,690
2,195 × 97,542 = 214,104,690
2,634 × 81,285 = 214,104,690
3,951 × 54,190 = 214,104,690
4,390 × 48,771 = 214,104,690
5,419 × 39,510 = 214,104,690
6,585 × 32,514 = 214,104,690
7,902 × 27,095 = 214,104,690
10,838 × 19,755 = 214,104,690
13,170 × 16,257 = 214,104,690
24 unique multiplications The final answer:
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