To find all the divisors of the number 319,662:
- 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 319,662:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
319,662 = 2 × 32 × 7 × 43 × 59
319,662 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 = (1 + 1) × (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 3 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 319,662
- 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 × 3 =
6
prime factor =
7
composite factor = 3
2 =
9
composite factor = 2 × 7 =
14
composite factor = 2 × 3
2 =
18
composite factor = 3 × 7 =
21
composite factor = 2 × 3 × 7 =
42
prime factor =
43
prime factor =
59
composite factor = 3
2 × 7 =
63
composite factor = 2 × 43 =
86
composite factor = 2 × 59 =
118
composite factor = 2 × 3
2 × 7 =
126
composite factor = 3 × 43 =
129
composite factor = 3 × 59 =
177
composite factor = 2 × 3 × 43 =
258
composite factor = 7 × 43 =
301
composite factor = 2 × 3 × 59 =
354
composite factor = 3
2 × 43 =
387
composite factor = 7 × 59 =
413
composite factor = 3
2 × 59 =
531
This list continues below...
... This list continues from above
composite factor = 2 × 7 × 43 =
602
composite factor = 2 × 3
2 × 43 =
774
composite factor = 2 × 7 × 59 =
826
composite factor = 3 × 7 × 43 =
903
composite factor = 2 × 3
2 × 59 =
1,062
composite factor = 3 × 7 × 59 =
1,239
composite factor = 2 × 3 × 7 × 43 =
1,806
composite factor = 2 × 3 × 7 × 59 =
2,478
composite factor = 43 × 59 =
2,537
composite factor = 3
2 × 7 × 43 =
2,709
composite factor = 3
2 × 7 × 59 =
3,717
composite factor = 2 × 43 × 59 =
5,074
composite factor = 2 × 3
2 × 7 × 43 =
5,418
composite factor = 2 × 3
2 × 7 × 59 =
7,434
composite factor = 3 × 43 × 59 =
7,611
composite factor = 2 × 3 × 43 × 59 =
15,222
composite factor = 7 × 43 × 59 =
17,759
composite factor = 3
2 × 43 × 59 =
22,833
composite factor = 2 × 7 × 43 × 59 =
35,518
composite factor = 2 × 3
2 × 43 × 59 =
45,666
composite factor = 3 × 7 × 43 × 59 =
53,277
composite factor = 2 × 3 × 7 × 43 × 59 =
106,554
composite factor = 3
2 × 7 × 43 × 59 =
159,831
composite factor = 2 × 3
2 × 7 × 43 × 59 =
319,662
48 factors (divisors)
What times what is 319,662?
What number multiplied by what number equals 319,662?
All the combinations of any two natural numbers whose product equals 319,662.
1 × 319,662 = 319,662
2 × 159,831 = 319,662
3 × 106,554 = 319,662
6 × 53,277 = 319,662
7 × 45,666 = 319,662
9 × 35,518 = 319,662
14 × 22,833 = 319,662
18 × 17,759 = 319,662
21 × 15,222 = 319,662
42 × 7,611 = 319,662
43 × 7,434 = 319,662
59 × 5,418 = 319,662
63 × 5,074 = 319,662
86 × 3,717 = 319,662
118 × 2,709 = 319,662
126 × 2,537 = 319,662
129 × 2,478 = 319,662
177 × 1,806 = 319,662
258 × 1,239 = 319,662
301 × 1,062 = 319,662
354 × 903 = 319,662
387 × 826 = 319,662
413 × 774 = 319,662
531 × 602 = 319,662
24 unique multiplications The final answer:
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