To find all the divisors of the number 40,176:
- 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 40,176:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
40,176 = 24 × 34 × 31
40,176 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 = (4 + 1) × (4 + 1) × (1 + 1) = 5 × 5 × 2 = 50
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 40,176
- 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
composite factor = 2
3 =
8
composite factor = 3
2 =
9
composite factor = 2
2 × 3 =
12
composite factor = 2
4 =
16
composite factor = 2 × 3
2 =
18
composite factor = 2
3 × 3 =
24
composite factor = 3
3 =
27
prime factor =
31
composite factor = 2
2 × 3
2 =
36
composite factor = 2
4 × 3 =
48
composite factor = 2 × 3
3 =
54
composite factor = 2 × 31 =
62
composite factor = 2
3 × 3
2 =
72
composite factor = 3
4 =
81
composite factor = 3 × 31 =
93
composite factor = 2
2 × 3
3 =
108
composite factor = 2
2 × 31 =
124
composite factor = 2
4 × 3
2 =
144
composite factor = 2 × 3
4 =
162
composite factor = 2 × 3 × 31 =
186
This list continues below...
... This list continues from above
composite factor = 2
3 × 3
3 =
216
composite factor = 2
3 × 31 =
248
composite factor = 3
2 × 31 =
279
composite factor = 2
2 × 3
4 =
324
composite factor = 2
2 × 3 × 31 =
372
composite factor = 2
4 × 3
3 =
432
composite factor = 2
4 × 31 =
496
composite factor = 2 × 3
2 × 31 =
558
composite factor = 2
3 × 3
4 =
648
composite factor = 2
3 × 3 × 31 =
744
composite factor = 3
3 × 31 =
837
composite factor = 2
2 × 3
2 × 31 =
1,116
composite factor = 2
4 × 3
4 =
1,296
composite factor = 2
4 × 3 × 31 =
1,488
composite factor = 2 × 3
3 × 31 =
1,674
composite factor = 2
3 × 3
2 × 31 =
2,232
composite factor = 3
4 × 31 =
2,511
composite factor = 2
2 × 3
3 × 31 =
3,348
composite factor = 2
4 × 3
2 × 31 =
4,464
composite factor = 2 × 3
4 × 31 =
5,022
composite factor = 2
3 × 3
3 × 31 =
6,696
composite factor = 2
2 × 3
4 × 31 =
10,044
composite factor = 2
4 × 3
3 × 31 =
13,392
composite factor = 2
3 × 3
4 × 31 =
20,088
composite factor = 2
4 × 3
4 × 31 =
40,176
50 factors (divisors)
What times what is 40,176?
What number multiplied by what number equals 40,176?
All the combinations of any two natural numbers whose product equals 40,176.
1 × 40,176 = 40,176
2 × 20,088 = 40,176
3 × 13,392 = 40,176
4 × 10,044 = 40,176
6 × 6,696 = 40,176
8 × 5,022 = 40,176
9 × 4,464 = 40,176
12 × 3,348 = 40,176
16 × 2,511 = 40,176
18 × 2,232 = 40,176
24 × 1,674 = 40,176
27 × 1,488 = 40,176
31 × 1,296 = 40,176
36 × 1,116 = 40,176
48 × 837 = 40,176
54 × 744 = 40,176
62 × 648 = 40,176
72 × 558 = 40,176
81 × 496 = 40,176
93 × 432 = 40,176
108 × 372 = 40,176
124 × 324 = 40,176
144 × 279 = 40,176
162 × 248 = 40,176
186 × 216 = 40,176
25 unique multiplications The final answer:
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