To find all the divisors of the number 214,620:
- 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 214,620:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
214,620 = 22 × 3 × 5 × 72 × 73
214,620 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) × (2 + 1) × (1 + 1) = 3 × 2 × 2 × 3 × 2 = 72
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 214,620
- 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
prime factor =
5
composite factor = 2 × 3 =
6
prime factor =
7
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 2 × 7 =
14
composite factor = 3 × 5 =
15
composite factor = 2
2 × 5 =
20
composite factor = 3 × 7 =
21
composite factor = 2
2 × 7 =
28
composite factor = 2 × 3 × 5 =
30
composite factor = 5 × 7 =
35
composite factor = 2 × 3 × 7 =
42
composite factor = 7
2 =
49
composite factor = 2
2 × 3 × 5 =
60
composite factor = 2 × 5 × 7 =
70
prime factor =
73
composite factor = 2
2 × 3 × 7 =
84
composite factor = 2 × 7
2 =
98
composite factor = 3 × 5 × 7 =
105
composite factor = 2
2 × 5 × 7 =
140
composite factor = 2 × 73 =
146
composite factor = 3 × 7
2 =
147
composite factor = 2
2 × 7
2 =
196
composite factor = 2 × 3 × 5 × 7 =
210
composite factor = 3 × 73 =
219
composite factor = 5 × 7
2 =
245
composite factor = 2
2 × 73 =
292
composite factor = 2 × 3 × 7
2 =
294
composite factor = 5 × 73 =
365
composite factor = 2
2 × 3 × 5 × 7 =
420
composite factor = 2 × 3 × 73 =
438
This list continues below...
... This list continues from above
composite factor = 2 × 5 × 7
2 =
490
composite factor = 7 × 73 =
511
composite factor = 2
2 × 3 × 7
2 =
588
composite factor = 2 × 5 × 73 =
730
composite factor = 3 × 5 × 7
2 =
735
composite factor = 2
2 × 3 × 73 =
876
composite factor = 2
2 × 5 × 7
2 =
980
composite factor = 2 × 7 × 73 =
1,022
composite factor = 3 × 5 × 73 =
1,095
composite factor = 2
2 × 5 × 73 =
1,460
composite factor = 2 × 3 × 5 × 7
2 =
1,470
composite factor = 3 × 7 × 73 =
1,533
composite factor = 2
2 × 7 × 73 =
2,044
composite factor = 2 × 3 × 5 × 73 =
2,190
composite factor = 5 × 7 × 73 =
2,555
composite factor = 2
2 × 3 × 5 × 7
2 =
2,940
composite factor = 2 × 3 × 7 × 73 =
3,066
composite factor = 7
2 × 73 =
3,577
composite factor = 2
2 × 3 × 5 × 73 =
4,380
composite factor = 2 × 5 × 7 × 73 =
5,110
composite factor = 2
2 × 3 × 7 × 73 =
6,132
composite factor = 2 × 7
2 × 73 =
7,154
composite factor = 3 × 5 × 7 × 73 =
7,665
composite factor = 2
2 × 5 × 7 × 73 =
10,220
composite factor = 3 × 7
2 × 73 =
10,731
composite factor = 2
2 × 7
2 × 73 =
14,308
composite factor = 2 × 3 × 5 × 7 × 73 =
15,330
composite factor = 5 × 7
2 × 73 =
17,885
composite factor = 2 × 3 × 7
2 × 73 =
21,462
composite factor = 2
2 × 3 × 5 × 7 × 73 =
30,660
composite factor = 2 × 5 × 7
2 × 73 =
35,770
composite factor = 2
2 × 3 × 7
2 × 73 =
42,924
composite factor = 3 × 5 × 7
2 × 73 =
53,655
composite factor = 2
2 × 5 × 7
2 × 73 =
71,540
composite factor = 2 × 3 × 5 × 7
2 × 73 =
107,310
composite factor = 2
2 × 3 × 5 × 7
2 × 73 =
214,620
72 factors (divisors)
What times what is 214,620?
What number multiplied by what number equals 214,620?
All the combinations of any two natural numbers whose product equals 214,620.
1 × 214,620 = 214,620
2 × 107,310 = 214,620
3 × 71,540 = 214,620
4 × 53,655 = 214,620
5 × 42,924 = 214,620
6 × 35,770 = 214,620
7 × 30,660 = 214,620
10 × 21,462 = 214,620
12 × 17,885 = 214,620
14 × 15,330 = 214,620
15 × 14,308 = 214,620
20 × 10,731 = 214,620
21 × 10,220 = 214,620
28 × 7,665 = 214,620
30 × 7,154 = 214,620
35 × 6,132 = 214,620
42 × 5,110 = 214,620
49 × 4,380 = 214,620
60 × 3,577 = 214,620
70 × 3,066 = 214,620
73 × 2,940 = 214,620
84 × 2,555 = 214,620
98 × 2,190 = 214,620
105 × 2,044 = 214,620
140 × 1,533 = 214,620
146 × 1,470 = 214,620
147 × 1,460 = 214,620
196 × 1,095 = 214,620
210 × 1,022 = 214,620
219 × 980 = 214,620
245 × 876 = 214,620
292 × 735 = 214,620
294 × 730 = 214,620
365 × 588 = 214,620
420 × 511 = 214,620
438 × 490 = 214,620
36 unique multiplications The final answer:
(scroll down)