To find all the divisors of the number 214,109,020:
- 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 214,109,020:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
214,109,020 = 22 × 5 × 71 × 131 × 1,151
214,109,020 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 = (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 214,109,020
- 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 =
5
composite factor = 2 × 5 =
10
composite factor = 2
2 × 5 =
20
prime factor =
71
prime factor =
131
composite factor = 2 × 71 =
142
composite factor = 2 × 131 =
262
composite factor = 2
2 × 71 =
284
composite factor = 5 × 71 =
355
composite factor = 2
2 × 131 =
524
composite factor = 5 × 131 =
655
composite factor = 2 × 5 × 71 =
710
prime factor =
1,151
composite factor = 2 × 5 × 131 =
1,310
composite factor = 2
2 × 5 × 71 =
1,420
composite factor = 2 × 1,151 =
2,302
composite factor = 2
2 × 5 × 131 =
2,620
composite factor = 2
2 × 1,151 =
4,604
composite factor = 5 × 1,151 =
5,755
composite factor = 71 × 131 =
9,301
composite factor = 2 × 5 × 1,151 =
11,510
This list continues below...
... This list continues from above
composite factor = 2 × 71 × 131 =
18,602
composite factor = 2
2 × 5 × 1,151 =
23,020
composite factor = 2
2 × 71 × 131 =
37,204
composite factor = 5 × 71 × 131 =
46,505
composite factor = 71 × 1,151 =
81,721
composite factor = 2 × 5 × 71 × 131 =
93,010
composite factor = 131 × 1,151 =
150,781
composite factor = 2 × 71 × 1,151 =
163,442
composite factor = 2
2 × 5 × 71 × 131 =
186,020
composite factor = 2 × 131 × 1,151 =
301,562
composite factor = 2
2 × 71 × 1,151 =
326,884
composite factor = 5 × 71 × 1,151 =
408,605
composite factor = 2
2 × 131 × 1,151 =
603,124
composite factor = 5 × 131 × 1,151 =
753,905
composite factor = 2 × 5 × 71 × 1,151 =
817,210
composite factor = 2 × 5 × 131 × 1,151 =
1,507,810
composite factor = 2
2 × 5 × 71 × 1,151 =
1,634,420
composite factor = 2
2 × 5 × 131 × 1,151 =
3,015,620
composite factor = 71 × 131 × 1,151 =
10,705,451
composite factor = 2 × 71 × 131 × 1,151 =
21,410,902
composite factor = 2
2 × 71 × 131 × 1,151 =
42,821,804
composite factor = 5 × 71 × 131 × 1,151 =
53,527,255
composite factor = 2 × 5 × 71 × 131 × 1,151 =
107,054,510
composite factor = 2
2 × 5 × 71 × 131 × 1,151 =
214,109,020
48 factors (divisors)
What times what is 214,109,020?
What number multiplied by what number equals 214,109,020?
All the combinations of any two natural numbers whose product equals 214,109,020.
1 × 214,109,020 = 214,109,020
2 × 107,054,510 = 214,109,020
4 × 53,527,255 = 214,109,020
5 × 42,821,804 = 214,109,020
10 × 21,410,902 = 214,109,020
20 × 10,705,451 = 214,109,020
71 × 3,015,620 = 214,109,020
131 × 1,634,420 = 214,109,020
142 × 1,507,810 = 214,109,020
262 × 817,210 = 214,109,020
284 × 753,905 = 214,109,020
355 × 603,124 = 214,109,020
524 × 408,605 = 214,109,020
655 × 326,884 = 214,109,020
710 × 301,562 = 214,109,020
1,151 × 186,020 = 214,109,020
1,310 × 163,442 = 214,109,020
1,420 × 150,781 = 214,109,020
2,302 × 93,010 = 214,109,020
2,620 × 81,721 = 214,109,020
4,604 × 46,505 = 214,109,020
5,755 × 37,204 = 214,109,020
9,301 × 23,020 = 214,109,020
11,510 × 18,602 = 214,109,020
24 unique multiplications The final answer:
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