To find all the divisors of the number 174,420:
- 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 174,420:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
174,420 = 22 × 33 × 5 × 17 × 19
174,420 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) × (3 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 4 × 2 × 2 × 2 = 96
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 174,420
- 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 = 3
2 =
9
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
prime factor =
17
composite factor = 2 × 3
2 =
18
prime factor =
19
composite factor = 2
2 × 5 =
20
composite factor = 3
3 =
27
composite factor = 2 × 3 × 5 =
30
composite factor = 2 × 17 =
34
composite factor = 2
2 × 3
2 =
36
composite factor = 2 × 19 =
38
composite factor = 3
2 × 5 =
45
composite factor = 3 × 17 =
51
composite factor = 2 × 3
3 =
54
composite factor = 3 × 19 =
57
composite factor = 2
2 × 3 × 5 =
60
composite factor = 2
2 × 17 =
68
composite factor = 2
2 × 19 =
76
composite factor = 5 × 17 =
85
composite factor = 2 × 3
2 × 5 =
90
composite factor = 5 × 19 =
95
composite factor = 2 × 3 × 17 =
102
composite factor = 2
2 × 3
3 =
108
composite factor = 2 × 3 × 19 =
114
composite factor = 3
3 × 5 =
135
composite factor = 3
2 × 17 =
153
composite factor = 2 × 5 × 17 =
170
composite factor = 3
2 × 19 =
171
composite factor = 2
2 × 3
2 × 5 =
180
composite factor = 2 × 5 × 19 =
190
composite factor = 2
2 × 3 × 17 =
204
composite factor = 2
2 × 3 × 19 =
228
composite factor = 3 × 5 × 17 =
255
composite factor = 2 × 3
3 × 5 =
270
composite factor = 3 × 5 × 19 =
285
composite factor = 2 × 3
2 × 17 =
306
composite factor = 17 × 19 =
323
composite factor = 2
2 × 5 × 17 =
340
composite factor = 2 × 3
2 × 19 =
342
composite factor = 2
2 × 5 × 19 =
380
This list continues below...
... This list continues from above
composite factor = 3
3 × 17 =
459
composite factor = 2 × 3 × 5 × 17 =
510
composite factor = 3
3 × 19 =
513
composite factor = 2
2 × 3
3 × 5 =
540
composite factor = 2 × 3 × 5 × 19 =
570
composite factor = 2
2 × 3
2 × 17 =
612
composite factor = 2 × 17 × 19 =
646
composite factor = 2
2 × 3
2 × 19 =
684
composite factor = 3
2 × 5 × 17 =
765
composite factor = 3
2 × 5 × 19 =
855
composite factor = 2 × 3
3 × 17 =
918
composite factor = 3 × 17 × 19 =
969
composite factor = 2
2 × 3 × 5 × 17 =
1,020
composite factor = 2 × 3
3 × 19 =
1,026
composite factor = 2
2 × 3 × 5 × 19 =
1,140
composite factor = 2
2 × 17 × 19 =
1,292
composite factor = 2 × 3
2 × 5 × 17 =
1,530
composite factor = 5 × 17 × 19 =
1,615
composite factor = 2 × 3
2 × 5 × 19 =
1,710
composite factor = 2
2 × 3
3 × 17 =
1,836
composite factor = 2 × 3 × 17 × 19 =
1,938
composite factor = 2
2 × 3
3 × 19 =
2,052
composite factor = 3
3 × 5 × 17 =
2,295
composite factor = 3
3 × 5 × 19 =
2,565
composite factor = 3
2 × 17 × 19 =
2,907
composite factor = 2
2 × 3
2 × 5 × 17 =
3,060
composite factor = 2 × 5 × 17 × 19 =
3,230
composite factor = 2
2 × 3
2 × 5 × 19 =
3,420
composite factor = 2
2 × 3 × 17 × 19 =
3,876
composite factor = 2 × 3
3 × 5 × 17 =
4,590
composite factor = 3 × 5 × 17 × 19 =
4,845
composite factor = 2 × 3
3 × 5 × 19 =
5,130
composite factor = 2 × 3
2 × 17 × 19 =
5,814
composite factor = 2
2 × 5 × 17 × 19 =
6,460
composite factor = 3
3 × 17 × 19 =
8,721
composite factor = 2
2 × 3
3 × 5 × 17 =
9,180
composite factor = 2 × 3 × 5 × 17 × 19 =
9,690
composite factor = 2
2 × 3
3 × 5 × 19 =
10,260
composite factor = 2
2 × 3
2 × 17 × 19 =
11,628
composite factor = 3
2 × 5 × 17 × 19 =
14,535
composite factor = 2 × 3
3 × 17 × 19 =
17,442
composite factor = 2
2 × 3 × 5 × 17 × 19 =
19,380
composite factor = 2 × 3
2 × 5 × 17 × 19 =
29,070
composite factor = 2
2 × 3
3 × 17 × 19 =
34,884
composite factor = 3
3 × 5 × 17 × 19 =
43,605
composite factor = 2
2 × 3
2 × 5 × 17 × 19 =
58,140
composite factor = 2 × 3
3 × 5 × 17 × 19 =
87,210
composite factor = 2
2 × 3
3 × 5 × 17 × 19 =
174,420
96 factors (divisors)
What times what is 174,420?
What number multiplied by what number equals 174,420?
All the combinations of any two natural numbers whose product equals 174,420.
1 × 174,420 = 174,420
2 × 87,210 = 174,420
3 × 58,140 = 174,420
4 × 43,605 = 174,420
5 × 34,884 = 174,420
6 × 29,070 = 174,420
9 × 19,380 = 174,420
10 × 17,442 = 174,420
12 × 14,535 = 174,420
15 × 11,628 = 174,420
17 × 10,260 = 174,420
18 × 9,690 = 174,420
19 × 9,180 = 174,420
20 × 8,721 = 174,420
27 × 6,460 = 174,420
30 × 5,814 = 174,420
34 × 5,130 = 174,420
36 × 4,845 = 174,420
38 × 4,590 = 174,420
45 × 3,876 = 174,420
51 × 3,420 = 174,420
54 × 3,230 = 174,420
57 × 3,060 = 174,420
60 × 2,907 = 174,420
68 × 2,565 = 174,420
76 × 2,295 = 174,420
85 × 2,052 = 174,420
90 × 1,938 = 174,420
95 × 1,836 = 174,420
102 × 1,710 = 174,420
108 × 1,615 = 174,420
114 × 1,530 = 174,420
135 × 1,292 = 174,420
153 × 1,140 = 174,420
170 × 1,026 = 174,420
171 × 1,020 = 174,420
180 × 969 = 174,420
190 × 918 = 174,420
204 × 855 = 174,420
228 × 765 = 174,420
255 × 684 = 174,420
270 × 646 = 174,420
285 × 612 = 174,420
306 × 570 = 174,420
323 × 540 = 174,420
340 × 513 = 174,420
342 × 510 = 174,420
380 × 459 = 174,420
48 unique multiplications The final answer:
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