To find all the divisors of the number 84,672:
- 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 84,672:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
84,672 = 26 × 33 × 72
84,672 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 = (6 + 1) × (3 + 1) × (2 + 1) = 7 × 4 × 3 = 84
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 84,672
- 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
composite factor = 2 × 3 =
6
prime factor =
7
composite factor = 2
3 =
8
composite factor = 3
2 =
9
composite factor = 2
2 × 3 =
12
composite factor = 2 × 7 =
14
composite factor = 2
4 =
16
composite factor = 2 × 3
2 =
18
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
5 =
32
composite factor = 2
2 × 3
2 =
36
composite factor = 2 × 3 × 7 =
42
composite factor = 2
4 × 3 =
48
composite factor = 7
2 =
49
composite factor = 2 × 3
3 =
54
composite factor = 2
3 × 7 =
56
composite factor = 3
2 × 7 =
63
composite factor = 2
6 =
64
composite factor = 2
3 × 3
2 =
72
composite factor = 2
2 × 3 × 7 =
84
composite factor = 2
5 × 3 =
96
composite factor = 2 × 7
2 =
98
composite factor = 2
2 × 3
3 =
108
composite factor = 2
4 × 7 =
112
composite factor = 2 × 3
2 × 7 =
126
composite factor = 2
4 × 3
2 =
144
composite factor = 3 × 7
2 =
147
composite factor = 2
3 × 3 × 7 =
168
composite factor = 3
3 × 7 =
189
composite factor = 2
6 × 3 =
192
composite factor = 2
2 × 7
2 =
196
composite factor = 2
3 × 3
3 =
216
composite factor = 2
5 × 7 =
224
composite factor = 2
2 × 3
2 × 7 =
252
composite factor = 2
5 × 3
2 =
288
This list continues below...
... This list continues from above
composite factor = 2 × 3 × 7
2 =
294
composite factor = 2
4 × 3 × 7 =
336
composite factor = 2 × 3
3 × 7 =
378
composite factor = 2
3 × 7
2 =
392
composite factor = 2
4 × 3
3 =
432
composite factor = 3
2 × 7
2 =
441
composite factor = 2
6 × 7 =
448
composite factor = 2
3 × 3
2 × 7 =
504
composite factor = 2
6 × 3
2 =
576
composite factor = 2
2 × 3 × 7
2 =
588
composite factor = 2
5 × 3 × 7 =
672
composite factor = 2
2 × 3
3 × 7 =
756
composite factor = 2
4 × 7
2 =
784
composite factor = 2
5 × 3
3 =
864
composite factor = 2 × 3
2 × 7
2 =
882
composite factor = 2
4 × 3
2 × 7 =
1,008
composite factor = 2
3 × 3 × 7
2 =
1,176
composite factor = 3
3 × 7
2 =
1,323
composite factor = 2
6 × 3 × 7 =
1,344
composite factor = 2
3 × 3
3 × 7 =
1,512
composite factor = 2
5 × 7
2 =
1,568
composite factor = 2
6 × 3
3 =
1,728
composite factor = 2
2 × 3
2 × 7
2 =
1,764
composite factor = 2
5 × 3
2 × 7 =
2,016
composite factor = 2
4 × 3 × 7
2 =
2,352
composite factor = 2 × 3
3 × 7
2 =
2,646
composite factor = 2
4 × 3
3 × 7 =
3,024
composite factor = 2
6 × 7
2 =
3,136
composite factor = 2
3 × 3
2 × 7
2 =
3,528
composite factor = 2
6 × 3
2 × 7 =
4,032
composite factor = 2
5 × 3 × 7
2 =
4,704
composite factor = 2
2 × 3
3 × 7
2 =
5,292
composite factor = 2
5 × 3
3 × 7 =
6,048
composite factor = 2
4 × 3
2 × 7
2 =
7,056
composite factor = 2
6 × 3 × 7
2 =
9,408
composite factor = 2
3 × 3
3 × 7
2 =
10,584
composite factor = 2
6 × 3
3 × 7 =
12,096
composite factor = 2
5 × 3
2 × 7
2 =
14,112
composite factor = 2
4 × 3
3 × 7
2 =
21,168
composite factor = 2
6 × 3
2 × 7
2 =
28,224
composite factor = 2
5 × 3
3 × 7
2 =
42,336
composite factor = 2
6 × 3
3 × 7
2 =
84,672
84 factors (divisors)
What times what is 84,672?
What number multiplied by what number equals 84,672?
All the combinations of any two natural numbers whose product equals 84,672.
1 × 84,672 = 84,672
2 × 42,336 = 84,672
3 × 28,224 = 84,672
4 × 21,168 = 84,672
6 × 14,112 = 84,672
7 × 12,096 = 84,672
8 × 10,584 = 84,672
9 × 9,408 = 84,672
12 × 7,056 = 84,672
14 × 6,048 = 84,672
16 × 5,292 = 84,672
18 × 4,704 = 84,672
21 × 4,032 = 84,672
24 × 3,528 = 84,672
27 × 3,136 = 84,672
28 × 3,024 = 84,672
32 × 2,646 = 84,672
36 × 2,352 = 84,672
42 × 2,016 = 84,672
48 × 1,764 = 84,672
49 × 1,728 = 84,672
54 × 1,568 = 84,672
56 × 1,512 = 84,672
63 × 1,344 = 84,672
64 × 1,323 = 84,672
72 × 1,176 = 84,672
84 × 1,008 = 84,672
96 × 882 = 84,672
98 × 864 = 84,672
108 × 784 = 84,672
112 × 756 = 84,672
126 × 672 = 84,672
144 × 588 = 84,672
147 × 576 = 84,672
168 × 504 = 84,672
189 × 448 = 84,672
192 × 441 = 84,672
196 × 432 = 84,672
216 × 392 = 84,672
224 × 378 = 84,672
252 × 336 = 84,672
288 × 294 = 84,672
42 unique multiplications The final answer:
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