To find all the divisors of the number 342,160:
- 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 342,160:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
342,160 = 24 × 5 × 7 × 13 × 47
342,160 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 = (4 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 5 × 2 × 2 × 2 × 2 = 80
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 342,160
- 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
prime factor =
7
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
prime factor =
13
composite factor = 2 × 7 =
14
composite factor = 2
4 =
16
composite factor = 2
2 × 5 =
20
composite factor = 2 × 13 =
26
composite factor = 2
2 × 7 =
28
composite factor = 5 × 7 =
35
composite factor = 2
3 × 5 =
40
prime factor =
47
composite factor = 2
2 × 13 =
52
composite factor = 2
3 × 7 =
56
composite factor = 5 × 13 =
65
composite factor = 2 × 5 × 7 =
70
composite factor = 2
4 × 5 =
80
composite factor = 7 × 13 =
91
composite factor = 2 × 47 =
94
composite factor = 2
3 × 13 =
104
composite factor = 2
4 × 7 =
112
composite factor = 2 × 5 × 13 =
130
composite factor = 2
2 × 5 × 7 =
140
composite factor = 2 × 7 × 13 =
182
composite factor = 2
2 × 47 =
188
composite factor = 2
4 × 13 =
208
composite factor = 5 × 47 =
235
composite factor = 2
2 × 5 × 13 =
260
composite factor = 2
3 × 5 × 7 =
280
composite factor = 7 × 47 =
329
composite factor = 2
2 × 7 × 13 =
364
composite factor = 2
3 × 47 =
376
composite factor = 5 × 7 × 13 =
455
composite factor = 2 × 5 × 47 =
470
composite factor = 2
3 × 5 × 13 =
520
composite factor = 2
4 × 5 × 7 =
560
This list continues below...
... This list continues from above
composite factor = 13 × 47 =
611
composite factor = 2 × 7 × 47 =
658
composite factor = 2
3 × 7 × 13 =
728
composite factor = 2
4 × 47 =
752
composite factor = 2 × 5 × 7 × 13 =
910
composite factor = 2
2 × 5 × 47 =
940
composite factor = 2
4 × 5 × 13 =
1,040
composite factor = 2 × 13 × 47 =
1,222
composite factor = 2
2 × 7 × 47 =
1,316
composite factor = 2
4 × 7 × 13 =
1,456
composite factor = 5 × 7 × 47 =
1,645
composite factor = 2
2 × 5 × 7 × 13 =
1,820
composite factor = 2
3 × 5 × 47 =
1,880
composite factor = 2
2 × 13 × 47 =
2,444
composite factor = 2
3 × 7 × 47 =
2,632
composite factor = 5 × 13 × 47 =
3,055
composite factor = 2 × 5 × 7 × 47 =
3,290
composite factor = 2
3 × 5 × 7 × 13 =
3,640
composite factor = 2
4 × 5 × 47 =
3,760
composite factor = 7 × 13 × 47 =
4,277
composite factor = 2
3 × 13 × 47 =
4,888
composite factor = 2
4 × 7 × 47 =
5,264
composite factor = 2 × 5 × 13 × 47 =
6,110
composite factor = 2
2 × 5 × 7 × 47 =
6,580
composite factor = 2
4 × 5 × 7 × 13 =
7,280
composite factor = 2 × 7 × 13 × 47 =
8,554
composite factor = 2
4 × 13 × 47 =
9,776
composite factor = 2
2 × 5 × 13 × 47 =
12,220
composite factor = 2
3 × 5 × 7 × 47 =
13,160
composite factor = 2
2 × 7 × 13 × 47 =
17,108
composite factor = 5 × 7 × 13 × 47 =
21,385
composite factor = 2
3 × 5 × 13 × 47 =
24,440
composite factor = 2
4 × 5 × 7 × 47 =
26,320
composite factor = 2
3 × 7 × 13 × 47 =
34,216
composite factor = 2 × 5 × 7 × 13 × 47 =
42,770
composite factor = 2
4 × 5 × 13 × 47 =
48,880
composite factor = 2
4 × 7 × 13 × 47 =
68,432
composite factor = 2
2 × 5 × 7 × 13 × 47 =
85,540
composite factor = 2
3 × 5 × 7 × 13 × 47 =
171,080
composite factor = 2
4 × 5 × 7 × 13 × 47 =
342,160
80 factors (divisors)
What times what is 342,160?
What number multiplied by what number equals 342,160?
All the combinations of any two natural numbers whose product equals 342,160.
1 × 342,160 = 342,160
2 × 171,080 = 342,160
4 × 85,540 = 342,160
5 × 68,432 = 342,160
7 × 48,880 = 342,160
8 × 42,770 = 342,160
10 × 34,216 = 342,160
13 × 26,320 = 342,160
14 × 24,440 = 342,160
16 × 21,385 = 342,160
20 × 17,108 = 342,160
26 × 13,160 = 342,160
28 × 12,220 = 342,160
35 × 9,776 = 342,160
40 × 8,554 = 342,160
47 × 7,280 = 342,160
52 × 6,580 = 342,160
56 × 6,110 = 342,160
65 × 5,264 = 342,160
70 × 4,888 = 342,160
80 × 4,277 = 342,160
91 × 3,760 = 342,160
94 × 3,640 = 342,160
104 × 3,290 = 342,160
112 × 3,055 = 342,160
130 × 2,632 = 342,160
140 × 2,444 = 342,160
182 × 1,880 = 342,160
188 × 1,820 = 342,160
208 × 1,645 = 342,160
235 × 1,456 = 342,160
260 × 1,316 = 342,160
280 × 1,222 = 342,160
329 × 1,040 = 342,160
364 × 940 = 342,160
376 × 910 = 342,160
455 × 752 = 342,160
470 × 728 = 342,160
520 × 658 = 342,160
560 × 611 = 342,160
40 unique multiplications The final answer:
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