To find all the divisors of the number 41,664:
- 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 41,664:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
41,664 = 26 × 3 × 7 × 31
41,664 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) × (1 + 1) × (1 + 1) × (1 + 1) = 7 × 2 × 2 × 2 = 56
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 41,664
- 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 = 2
2 × 3 =
12
composite factor = 2 × 7 =
14
composite factor = 2
4 =
16
composite factor = 3 × 7 =
21
composite factor = 2
3 × 3 =
24
composite factor = 2
2 × 7 =
28
prime factor =
31
composite factor = 2
5 =
32
composite factor = 2 × 3 × 7 =
42
composite factor = 2
4 × 3 =
48
composite factor = 2
3 × 7 =
56
composite factor = 2 × 31 =
62
composite factor = 2
6 =
64
composite factor = 2
2 × 3 × 7 =
84
composite factor = 3 × 31 =
93
composite factor = 2
5 × 3 =
96
composite factor = 2
4 × 7 =
112
composite factor = 2
2 × 31 =
124
composite factor = 2
3 × 3 × 7 =
168
composite factor = 2 × 3 × 31 =
186
composite factor = 2
6 × 3 =
192
This list continues below...
... This list continues from above
composite factor = 7 × 31 =
217
composite factor = 2
5 × 7 =
224
composite factor = 2
3 × 31 =
248
composite factor = 2
4 × 3 × 7 =
336
composite factor = 2
2 × 3 × 31 =
372
composite factor = 2 × 7 × 31 =
434
composite factor = 2
6 × 7 =
448
composite factor = 2
4 × 31 =
496
composite factor = 3 × 7 × 31 =
651
composite factor = 2
5 × 3 × 7 =
672
composite factor = 2
3 × 3 × 31 =
744
composite factor = 2
2 × 7 × 31 =
868
composite factor = 2
5 × 31 =
992
composite factor = 2 × 3 × 7 × 31 =
1,302
composite factor = 2
6 × 3 × 7 =
1,344
composite factor = 2
4 × 3 × 31 =
1,488
composite factor = 2
3 × 7 × 31 =
1,736
composite factor = 2
6 × 31 =
1,984
composite factor = 2
2 × 3 × 7 × 31 =
2,604
composite factor = 2
5 × 3 × 31 =
2,976
composite factor = 2
4 × 7 × 31 =
3,472
composite factor = 2
3 × 3 × 7 × 31 =
5,208
composite factor = 2
6 × 3 × 31 =
5,952
composite factor = 2
5 × 7 × 31 =
6,944
composite factor = 2
4 × 3 × 7 × 31 =
10,416
composite factor = 2
6 × 7 × 31 =
13,888
composite factor = 2
5 × 3 × 7 × 31 =
20,832
composite factor = 2
6 × 3 × 7 × 31 =
41,664
56 factors (divisors)
What times what is 41,664?
What number multiplied by what number equals 41,664?
All the combinations of any two natural numbers whose product equals 41,664.
1 × 41,664 = 41,664
2 × 20,832 = 41,664
3 × 13,888 = 41,664
4 × 10,416 = 41,664
6 × 6,944 = 41,664
7 × 5,952 = 41,664
8 × 5,208 = 41,664
12 × 3,472 = 41,664
14 × 2,976 = 41,664
16 × 2,604 = 41,664
21 × 1,984 = 41,664
24 × 1,736 = 41,664
28 × 1,488 = 41,664
31 × 1,344 = 41,664
32 × 1,302 = 41,664
42 × 992 = 41,664
48 × 868 = 41,664
56 × 744 = 41,664
62 × 672 = 41,664
64 × 651 = 41,664
84 × 496 = 41,664
93 × 448 = 41,664
96 × 434 = 41,664
112 × 372 = 41,664
124 × 336 = 41,664
168 × 248 = 41,664
186 × 224 = 41,664
192 × 217 = 41,664
28 unique multiplications The final answer:
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