To find all the divisors of the number 71,176:
- 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 71,176:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
71,176 = 23 × 7 × 31 × 41
71,176 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 = (3 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 4 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 71,176
- 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
composite factor = 2
2 =
4
prime factor =
7
composite factor = 2
3 =
8
composite factor = 2 × 7 =
14
composite factor = 2
2 × 7 =
28
prime factor =
31
prime factor =
41
composite factor = 2
3 × 7 =
56
composite factor = 2 × 31 =
62
composite factor = 2 × 41 =
82
composite factor = 2
2 × 31 =
124
composite factor = 2
2 × 41 =
164
composite factor = 7 × 31 =
217
composite factor = 2
3 × 31 =
248
This list continues below...
... This list continues from above
composite factor = 7 × 41 =
287
composite factor = 2
3 × 41 =
328
composite factor = 2 × 7 × 31 =
434
composite factor = 2 × 7 × 41 =
574
composite factor = 2
2 × 7 × 31 =
868
composite factor = 2
2 × 7 × 41 =
1,148
composite factor = 31 × 41 =
1,271
composite factor = 2
3 × 7 × 31 =
1,736
composite factor = 2
3 × 7 × 41 =
2,296
composite factor = 2 × 31 × 41 =
2,542
composite factor = 2
2 × 31 × 41 =
5,084
composite factor = 7 × 31 × 41 =
8,897
composite factor = 2
3 × 31 × 41 =
10,168
composite factor = 2 × 7 × 31 × 41 =
17,794
composite factor = 2
2 × 7 × 31 × 41 =
35,588
composite factor = 2
3 × 7 × 31 × 41 =
71,176
32 factors (divisors)
What times what is 71,176?
What number multiplied by what number equals 71,176?
All the combinations of any two natural numbers whose product equals 71,176.
1 × 71,176 = 71,176
2 × 35,588 = 71,176
4 × 17,794 = 71,176
7 × 10,168 = 71,176
8 × 8,897 = 71,176
14 × 5,084 = 71,176
28 × 2,542 = 71,176
31 × 2,296 = 71,176
41 × 1,736 = 71,176
56 × 1,271 = 71,176
62 × 1,148 = 71,176
82 × 868 = 71,176
124 × 574 = 71,176
164 × 434 = 71,176
217 × 328 = 71,176
248 × 287 = 71,176
16 unique multiplications The final answer:
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