To find all the divisors of the number 92,820:
- 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 92,820:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
92,820 = 22 × 3 × 5 × 7 × 13 × 17
92,820 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) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 2 × 2 × 2 × 2 = 96
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 92,820
- 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
prime factor =
13
composite factor = 2 × 7 =
14
composite factor = 3 × 5 =
15
prime factor =
17
composite factor = 2
2 × 5 =
20
composite factor = 3 × 7 =
21
composite factor = 2 × 13 =
26
composite factor = 2
2 × 7 =
28
composite factor = 2 × 3 × 5 =
30
composite factor = 2 × 17 =
34
composite factor = 5 × 7 =
35
composite factor = 3 × 13 =
39
composite factor = 2 × 3 × 7 =
42
composite factor = 3 × 17 =
51
composite factor = 2
2 × 13 =
52
composite factor = 2
2 × 3 × 5 =
60
composite factor = 5 × 13 =
65
composite factor = 2
2 × 17 =
68
composite factor = 2 × 5 × 7 =
70
composite factor = 2 × 3 × 13 =
78
composite factor = 2
2 × 3 × 7 =
84
composite factor = 5 × 17 =
85
composite factor = 7 × 13 =
91
composite factor = 2 × 3 × 17 =
102
composite factor = 3 × 5 × 7 =
105
composite factor = 7 × 17 =
119
composite factor = 2 × 5 × 13 =
130
composite factor = 2
2 × 5 × 7 =
140
composite factor = 2
2 × 3 × 13 =
156
composite factor = 2 × 5 × 17 =
170
composite factor = 2 × 7 × 13 =
182
composite factor = 3 × 5 × 13 =
195
composite factor = 2
2 × 3 × 17 =
204
composite factor = 2 × 3 × 5 × 7 =
210
composite factor = 13 × 17 =
221
composite factor = 2 × 7 × 17 =
238
composite factor = 3 × 5 × 17 =
255
composite factor = 2
2 × 5 × 13 =
260
composite factor = 3 × 7 × 13 =
273
This list continues below...
... This list continues from above
composite factor = 2
2 × 5 × 17 =
340
composite factor = 3 × 7 × 17 =
357
composite factor = 2
2 × 7 × 13 =
364
composite factor = 2 × 3 × 5 × 13 =
390
composite factor = 2
2 × 3 × 5 × 7 =
420
composite factor = 2 × 13 × 17 =
442
composite factor = 5 × 7 × 13 =
455
composite factor = 2
2 × 7 × 17 =
476
composite factor = 2 × 3 × 5 × 17 =
510
composite factor = 2 × 3 × 7 × 13 =
546
composite factor = 5 × 7 × 17 =
595
composite factor = 3 × 13 × 17 =
663
composite factor = 2 × 3 × 7 × 17 =
714
composite factor = 2
2 × 3 × 5 × 13 =
780
composite factor = 2
2 × 13 × 17 =
884
composite factor = 2 × 5 × 7 × 13 =
910
composite factor = 2
2 × 3 × 5 × 17 =
1,020
composite factor = 2
2 × 3 × 7 × 13 =
1,092
composite factor = 5 × 13 × 17 =
1,105
composite factor = 2 × 5 × 7 × 17 =
1,190
composite factor = 2 × 3 × 13 × 17 =
1,326
composite factor = 3 × 5 × 7 × 13 =
1,365
composite factor = 2
2 × 3 × 7 × 17 =
1,428
composite factor = 7 × 13 × 17 =
1,547
composite factor = 3 × 5 × 7 × 17 =
1,785
composite factor = 2
2 × 5 × 7 × 13 =
1,820
composite factor = 2 × 5 × 13 × 17 =
2,210
composite factor = 2
2 × 5 × 7 × 17 =
2,380
composite factor = 2
2 × 3 × 13 × 17 =
2,652
composite factor = 2 × 3 × 5 × 7 × 13 =
2,730
composite factor = 2 × 7 × 13 × 17 =
3,094
composite factor = 3 × 5 × 13 × 17 =
3,315
composite factor = 2 × 3 × 5 × 7 × 17 =
3,570
composite factor = 2
2 × 5 × 13 × 17 =
4,420
composite factor = 3 × 7 × 13 × 17 =
4,641
composite factor = 2
2 × 3 × 5 × 7 × 13 =
5,460
composite factor = 2
2 × 7 × 13 × 17 =
6,188
composite factor = 2 × 3 × 5 × 13 × 17 =
6,630
composite factor = 2
2 × 3 × 5 × 7 × 17 =
7,140
composite factor = 5 × 7 × 13 × 17 =
7,735
composite factor = 2 × 3 × 7 × 13 × 17 =
9,282
composite factor = 2
2 × 3 × 5 × 13 × 17 =
13,260
composite factor = 2 × 5 × 7 × 13 × 17 =
15,470
composite factor = 2
2 × 3 × 7 × 13 × 17 =
18,564
composite factor = 3 × 5 × 7 × 13 × 17 =
23,205
composite factor = 2
2 × 5 × 7 × 13 × 17 =
30,940
composite factor = 2 × 3 × 5 × 7 × 13 × 17 =
46,410
composite factor = 2
2 × 3 × 5 × 7 × 13 × 17 =
92,820
96 factors (divisors)
What times what is 92,820?
What number multiplied by what number equals 92,820?
All the combinations of any two natural numbers whose product equals 92,820.
1 × 92,820 = 92,820
2 × 46,410 = 92,820
3 × 30,940 = 92,820
4 × 23,205 = 92,820
5 × 18,564 = 92,820
6 × 15,470 = 92,820
7 × 13,260 = 92,820
10 × 9,282 = 92,820
12 × 7,735 = 92,820
13 × 7,140 = 92,820
14 × 6,630 = 92,820
15 × 6,188 = 92,820
17 × 5,460 = 92,820
20 × 4,641 = 92,820
21 × 4,420 = 92,820
26 × 3,570 = 92,820
28 × 3,315 = 92,820
30 × 3,094 = 92,820
34 × 2,730 = 92,820
35 × 2,652 = 92,820
39 × 2,380 = 92,820
42 × 2,210 = 92,820
51 × 1,820 = 92,820
52 × 1,785 = 92,820
60 × 1,547 = 92,820
65 × 1,428 = 92,820
68 × 1,365 = 92,820
70 × 1,326 = 92,820
78 × 1,190 = 92,820
84 × 1,105 = 92,820
85 × 1,092 = 92,820
91 × 1,020 = 92,820
102 × 910 = 92,820
105 × 884 = 92,820
119 × 780 = 92,820
130 × 714 = 92,820
140 × 663 = 92,820
156 × 595 = 92,820
170 × 546 = 92,820
182 × 510 = 92,820
195 × 476 = 92,820
204 × 455 = 92,820
210 × 442 = 92,820
221 × 420 = 92,820
238 × 390 = 92,820
255 × 364 = 92,820
260 × 357 = 92,820
273 × 340 = 92,820
48 unique multiplications The final answer:
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