To find all the divisors of the number 214,080:
- 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 214,080:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
214,080 = 26 × 3 × 5 × 223
214,080 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 = (6 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 7 × 2 × 2 × 2 = 56
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 214,080
- 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
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
4 =
16
composite factor = 2
2 × 5 =
20
composite factor = 2
3 × 3 =
24
composite factor = 2 × 3 × 5 =
30
composite factor = 2
5 =
32
composite factor = 2
3 × 5 =
40
composite factor = 2
4 × 3 =
48
composite factor = 2
2 × 3 × 5 =
60
composite factor = 2
6 =
64
composite factor = 2
4 × 5 =
80
composite factor = 2
5 × 3 =
96
composite factor = 2
3 × 3 × 5 =
120
composite factor = 2
5 × 5 =
160
composite factor = 2
6 × 3 =
192
prime factor =
223
composite factor = 2
4 × 3 × 5 =
240
composite factor = 2
6 × 5 =
320
composite factor = 2 × 223 =
446
This list continues below...
... This list continues from above
composite factor = 2
5 × 3 × 5 =
480
composite factor = 3 × 223 =
669
composite factor = 2
2 × 223 =
892
composite factor = 2
6 × 3 × 5 =
960
composite factor = 5 × 223 =
1,115
composite factor = 2 × 3 × 223 =
1,338
composite factor = 2
3 × 223 =
1,784
composite factor = 2 × 5 × 223 =
2,230
composite factor = 2
2 × 3 × 223 =
2,676
composite factor = 3 × 5 × 223 =
3,345
composite factor = 2
4 × 223 =
3,568
composite factor = 2
2 × 5 × 223 =
4,460
composite factor = 2
3 × 3 × 223 =
5,352
composite factor = 2 × 3 × 5 × 223 =
6,690
composite factor = 2
5 × 223 =
7,136
composite factor = 2
3 × 5 × 223 =
8,920
composite factor = 2
4 × 3 × 223 =
10,704
composite factor = 2
2 × 3 × 5 × 223 =
13,380
composite factor = 2
6 × 223 =
14,272
composite factor = 2
4 × 5 × 223 =
17,840
composite factor = 2
5 × 3 × 223 =
21,408
composite factor = 2
3 × 3 × 5 × 223 =
26,760
composite factor = 2
5 × 5 × 223 =
35,680
composite factor = 2
6 × 3 × 223 =
42,816
composite factor = 2
4 × 3 × 5 × 223 =
53,520
composite factor = 2
6 × 5 × 223 =
71,360
composite factor = 2
5 × 3 × 5 × 223 =
107,040
composite factor = 2
6 × 3 × 5 × 223 =
214,080
56 factors (divisors)
What times what is 214,080?
What number multiplied by what number equals 214,080?
All the combinations of any two natural numbers whose product equals 214,080.
1 × 214,080 = 214,080
2 × 107,040 = 214,080
3 × 71,360 = 214,080
4 × 53,520 = 214,080
5 × 42,816 = 214,080
6 × 35,680 = 214,080
8 × 26,760 = 214,080
10 × 21,408 = 214,080
12 × 17,840 = 214,080
15 × 14,272 = 214,080
16 × 13,380 = 214,080
20 × 10,704 = 214,080
24 × 8,920 = 214,080
30 × 7,136 = 214,080
32 × 6,690 = 214,080
40 × 5,352 = 214,080
48 × 4,460 = 214,080
60 × 3,568 = 214,080
64 × 3,345 = 214,080
80 × 2,676 = 214,080
96 × 2,230 = 214,080
120 × 1,784 = 214,080
160 × 1,338 = 214,080
192 × 1,115 = 214,080
223 × 960 = 214,080
240 × 892 = 214,080
320 × 669 = 214,080
446 × 480 = 214,080
28 unique multiplications The final answer:
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