To find all the divisors of the number 188,760:
- 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 188,760:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
188,760 = 23 × 3 × 5 × 112 × 13
188,760 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 = (3 + 1) × (1 + 1) × (1 + 1) × (2 + 1) × (1 + 1) = 4 × 2 × 2 × 3 × 2 = 96
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 188,760
- 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
prime factor =
11
composite factor = 2
2 × 3 =
12
prime factor =
13
composite factor = 3 × 5 =
15
composite factor = 2
2 × 5 =
20
composite factor = 2 × 11 =
22
composite factor = 2
3 × 3 =
24
composite factor = 2 × 13 =
26
composite factor = 2 × 3 × 5 =
30
composite factor = 3 × 11 =
33
composite factor = 3 × 13 =
39
composite factor = 2
3 × 5 =
40
composite factor = 2
2 × 11 =
44
composite factor = 2
2 × 13 =
52
composite factor = 5 × 11 =
55
composite factor = 2
2 × 3 × 5 =
60
composite factor = 5 × 13 =
65
composite factor = 2 × 3 × 11 =
66
composite factor = 2 × 3 × 13 =
78
composite factor = 2
3 × 11 =
88
composite factor = 2
3 × 13 =
104
composite factor = 2 × 5 × 11 =
110
composite factor = 2
3 × 3 × 5 =
120
composite factor = 11
2 =
121
composite factor = 2 × 5 × 13 =
130
composite factor = 2
2 × 3 × 11 =
132
composite factor = 11 × 13 =
143
composite factor = 2
2 × 3 × 13 =
156
composite factor = 3 × 5 × 11 =
165
composite factor = 3 × 5 × 13 =
195
composite factor = 2
2 × 5 × 11 =
220
composite factor = 2 × 11
2 =
242
composite factor = 2
2 × 5 × 13 =
260
composite factor = 2
3 × 3 × 11 =
264
composite factor = 2 × 11 × 13 =
286
composite factor = 2
3 × 3 × 13 =
312
composite factor = 2 × 3 × 5 × 11 =
330
composite factor = 3 × 11
2 =
363
composite factor = 2 × 3 × 5 × 13 =
390
composite factor = 3 × 11 × 13 =
429
This list continues below...
... This list continues from above
composite factor = 2
3 × 5 × 11 =
440
composite factor = 2
2 × 11
2 =
484
composite factor = 2
3 × 5 × 13 =
520
composite factor = 2
2 × 11 × 13 =
572
composite factor = 5 × 11
2 =
605
composite factor = 2
2 × 3 × 5 × 11 =
660
composite factor = 5 × 11 × 13 =
715
composite factor = 2 × 3 × 11
2 =
726
composite factor = 2
2 × 3 × 5 × 13 =
780
composite factor = 2 × 3 × 11 × 13 =
858
composite factor = 2
3 × 11
2 =
968
composite factor = 2
3 × 11 × 13 =
1,144
composite factor = 2 × 5 × 11
2 =
1,210
composite factor = 2
3 × 3 × 5 × 11 =
1,320
composite factor = 2 × 5 × 11 × 13 =
1,430
composite factor = 2
2 × 3 × 11
2 =
1,452
composite factor = 2
3 × 3 × 5 × 13 =
1,560
composite factor = 11
2 × 13 =
1,573
composite factor = 2
2 × 3 × 11 × 13 =
1,716
composite factor = 3 × 5 × 11
2 =
1,815
composite factor = 3 × 5 × 11 × 13 =
2,145
composite factor = 2
2 × 5 × 11
2 =
2,420
composite factor = 2
2 × 5 × 11 × 13 =
2,860
composite factor = 2
3 × 3 × 11
2 =
2,904
composite factor = 2 × 11
2 × 13 =
3,146
composite factor = 2
3 × 3 × 11 × 13 =
3,432
composite factor = 2 × 3 × 5 × 11
2 =
3,630
composite factor = 2 × 3 × 5 × 11 × 13 =
4,290
composite factor = 3 × 11
2 × 13 =
4,719
composite factor = 2
3 × 5 × 11
2 =
4,840
composite factor = 2
3 × 5 × 11 × 13 =
5,720
composite factor = 2
2 × 11
2 × 13 =
6,292
composite factor = 2
2 × 3 × 5 × 11
2 =
7,260
composite factor = 5 × 11
2 × 13 =
7,865
composite factor = 2
2 × 3 × 5 × 11 × 13 =
8,580
composite factor = 2 × 3 × 11
2 × 13 =
9,438
composite factor = 2
3 × 11
2 × 13 =
12,584
composite factor = 2
3 × 3 × 5 × 11
2 =
14,520
composite factor = 2 × 5 × 11
2 × 13 =
15,730
composite factor = 2
3 × 3 × 5 × 11 × 13 =
17,160
composite factor = 2
2 × 3 × 11
2 × 13 =
18,876
composite factor = 3 × 5 × 11
2 × 13 =
23,595
composite factor = 2
2 × 5 × 11
2 × 13 =
31,460
composite factor = 2
3 × 3 × 11
2 × 13 =
37,752
composite factor = 2 × 3 × 5 × 11
2 × 13 =
47,190
composite factor = 2
3 × 5 × 11
2 × 13 =
62,920
composite factor = 2
2 × 3 × 5 × 11
2 × 13 =
94,380
composite factor = 2
3 × 3 × 5 × 11
2 × 13 =
188,760
96 factors (divisors)
What times what is 188,760?
What number multiplied by what number equals 188,760?
All the combinations of any two natural numbers whose product equals 188,760.
1 × 188,760 = 188,760
2 × 94,380 = 188,760
3 × 62,920 = 188,760
4 × 47,190 = 188,760
5 × 37,752 = 188,760
6 × 31,460 = 188,760
8 × 23,595 = 188,760
10 × 18,876 = 188,760
11 × 17,160 = 188,760
12 × 15,730 = 188,760
13 × 14,520 = 188,760
15 × 12,584 = 188,760
20 × 9,438 = 188,760
22 × 8,580 = 188,760
24 × 7,865 = 188,760
26 × 7,260 = 188,760
30 × 6,292 = 188,760
33 × 5,720 = 188,760
39 × 4,840 = 188,760
40 × 4,719 = 188,760
44 × 4,290 = 188,760
52 × 3,630 = 188,760
55 × 3,432 = 188,760
60 × 3,146 = 188,760
65 × 2,904 = 188,760
66 × 2,860 = 188,760
78 × 2,420 = 188,760
88 × 2,145 = 188,760
104 × 1,815 = 188,760
110 × 1,716 = 188,760
120 × 1,573 = 188,760
121 × 1,560 = 188,760
130 × 1,452 = 188,760
132 × 1,430 = 188,760
143 × 1,320 = 188,760
156 × 1,210 = 188,760
165 × 1,144 = 188,760
195 × 968 = 188,760
220 × 858 = 188,760
242 × 780 = 188,760
260 × 726 = 188,760
264 × 715 = 188,760
286 × 660 = 188,760
312 × 605 = 188,760
330 × 572 = 188,760
363 × 520 = 188,760
390 × 484 = 188,760
429 × 440 = 188,760
48 unique multiplications The final answer:
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