To find all the divisors of the number 52,920:
- 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 52,920:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
52,920 = 23 × 33 × 5 × 72
52,920 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) × (3 + 1) × (1 + 1) × (2 + 1) = 4 × 4 × 2 × 3 = 96
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 52,920
- 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
3 =
8
composite factor = 3
2 =
9
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 2 × 7 =
14
composite factor = 3 × 5 =
15
composite factor = 2 × 3
2 =
18
composite factor = 2
2 × 5 =
20
composite factor = 3 × 7 =
21
composite factor = 2
3 × 3 =
24
composite factor = 3
3 =
27
composite factor = 2
2 × 7 =
28
composite factor = 2 × 3 × 5 =
30
composite factor = 5 × 7 =
35
composite factor = 2
2 × 3
2 =
36
composite factor = 2
3 × 5 =
40
composite factor = 2 × 3 × 7 =
42
composite factor = 3
2 × 5 =
45
composite factor = 7
2 =
49
composite factor = 2 × 3
3 =
54
composite factor = 2
3 × 7 =
56
composite factor = 2
2 × 3 × 5 =
60
composite factor = 3
2 × 7 =
63
composite factor = 2 × 5 × 7 =
70
composite factor = 2
3 × 3
2 =
72
composite factor = 2
2 × 3 × 7 =
84
composite factor = 2 × 3
2 × 5 =
90
composite factor = 2 × 7
2 =
98
composite factor = 3 × 5 × 7 =
105
composite factor = 2
2 × 3
3 =
108
composite factor = 2
3 × 3 × 5 =
120
composite factor = 2 × 3
2 × 7 =
126
composite factor = 3
3 × 5 =
135
composite factor = 2
2 × 5 × 7 =
140
composite factor = 3 × 7
2 =
147
composite factor = 2
3 × 3 × 7 =
168
composite factor = 2
2 × 3
2 × 5 =
180
composite factor = 3
3 × 7 =
189
composite factor = 2
2 × 7
2 =
196
composite factor = 2 × 3 × 5 × 7 =
210
composite factor = 2
3 × 3
3 =
216
This list continues below...
... This list continues from above
composite factor = 5 × 7
2 =
245
composite factor = 2
2 × 3
2 × 7 =
252
composite factor = 2 × 3
3 × 5 =
270
composite factor = 2
3 × 5 × 7 =
280
composite factor = 2 × 3 × 7
2 =
294
composite factor = 3
2 × 5 × 7 =
315
composite factor = 2
3 × 3
2 × 5 =
360
composite factor = 2 × 3
3 × 7 =
378
composite factor = 2
3 × 7
2 =
392
composite factor = 2
2 × 3 × 5 × 7 =
420
composite factor = 3
2 × 7
2 =
441
composite factor = 2 × 5 × 7
2 =
490
composite factor = 2
3 × 3
2 × 7 =
504
composite factor = 2
2 × 3
3 × 5 =
540
composite factor = 2
2 × 3 × 7
2 =
588
composite factor = 2 × 3
2 × 5 × 7 =
630
composite factor = 3 × 5 × 7
2 =
735
composite factor = 2
2 × 3
3 × 7 =
756
composite factor = 2
3 × 3 × 5 × 7 =
840
composite factor = 2 × 3
2 × 7
2 =
882
composite factor = 3
3 × 5 × 7 =
945
composite factor = 2
2 × 5 × 7
2 =
980
composite factor = 2
3 × 3
3 × 5 =
1,080
composite factor = 2
3 × 3 × 7
2 =
1,176
composite factor = 2
2 × 3
2 × 5 × 7 =
1,260
composite factor = 3
3 × 7
2 =
1,323
composite factor = 2 × 3 × 5 × 7
2 =
1,470
composite factor = 2
3 × 3
3 × 7 =
1,512
composite factor = 2
2 × 3
2 × 7
2 =
1,764
composite factor = 2 × 3
3 × 5 × 7 =
1,890
composite factor = 2
3 × 5 × 7
2 =
1,960
composite factor = 3
2 × 5 × 7
2 =
2,205
composite factor = 2
3 × 3
2 × 5 × 7 =
2,520
composite factor = 2 × 3
3 × 7
2 =
2,646
composite factor = 2
2 × 3 × 5 × 7
2 =
2,940
composite factor = 2
3 × 3
2 × 7
2 =
3,528
composite factor = 2
2 × 3
3 × 5 × 7 =
3,780
composite factor = 2 × 3
2 × 5 × 7
2 =
4,410
composite factor = 2
2 × 3
3 × 7
2 =
5,292
composite factor = 2
3 × 3 × 5 × 7
2 =
5,880
composite factor = 3
3 × 5 × 7
2 =
6,615
composite factor = 2
3 × 3
3 × 5 × 7 =
7,560
composite factor = 2
2 × 3
2 × 5 × 7
2 =
8,820
composite factor = 2
3 × 3
3 × 7
2 =
10,584
composite factor = 2 × 3
3 × 5 × 7
2 =
13,230
composite factor = 2
3 × 3
2 × 5 × 7
2 =
17,640
composite factor = 2
2 × 3
3 × 5 × 7
2 =
26,460
composite factor = 2
3 × 3
3 × 5 × 7
2 =
52,920
96 factors (divisors)
What times what is 52,920?
What number multiplied by what number equals 52,920?
All the combinations of any two natural numbers whose product equals 52,920.
1 × 52,920 = 52,920
2 × 26,460 = 52,920
3 × 17,640 = 52,920
4 × 13,230 = 52,920
5 × 10,584 = 52,920
6 × 8,820 = 52,920
7 × 7,560 = 52,920
8 × 6,615 = 52,920
9 × 5,880 = 52,920
10 × 5,292 = 52,920
12 × 4,410 = 52,920
14 × 3,780 = 52,920
15 × 3,528 = 52,920
18 × 2,940 = 52,920
20 × 2,646 = 52,920
21 × 2,520 = 52,920
24 × 2,205 = 52,920
27 × 1,960 = 52,920
28 × 1,890 = 52,920
30 × 1,764 = 52,920
35 × 1,512 = 52,920
36 × 1,470 = 52,920
40 × 1,323 = 52,920
42 × 1,260 = 52,920
45 × 1,176 = 52,920
49 × 1,080 = 52,920
54 × 980 = 52,920
56 × 945 = 52,920
60 × 882 = 52,920
63 × 840 = 52,920
70 × 756 = 52,920
72 × 735 = 52,920
84 × 630 = 52,920
90 × 588 = 52,920
98 × 540 = 52,920
105 × 504 = 52,920
108 × 490 = 52,920
120 × 441 = 52,920
126 × 420 = 52,920
135 × 392 = 52,920
140 × 378 = 52,920
147 × 360 = 52,920
168 × 315 = 52,920
180 × 294 = 52,920
189 × 280 = 52,920
196 × 270 = 52,920
210 × 252 = 52,920
216 × 245 = 52,920
48 unique multiplications The final answer:
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