To find all the divisors of the number 311,202:
- 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 311,202:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
311,202 = 2 × 34 × 17 × 113
311,202 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) × (4 + 1) × (1 + 1) × (1 + 1) = 2 × 5 × 2 × 2 = 40
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 311,202
- 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
composite factor = 3
2 =
9
prime factor =
17
composite factor = 2 × 3
2 =
18
composite factor = 3
3 =
27
composite factor = 2 × 17 =
34
composite factor = 3 × 17 =
51
composite factor = 2 × 3
3 =
54
composite factor = 3
4 =
81
composite factor = 2 × 3 × 17 =
102
prime factor =
113
composite factor = 3
2 × 17 =
153
composite factor = 2 × 3
4 =
162
composite factor = 2 × 113 =
226
composite factor = 2 × 3
2 × 17 =
306
composite factor = 3 × 113 =
339
composite factor = 3
3 × 17 =
459
This list continues below...
... This list continues from above
composite factor = 2 × 3 × 113 =
678
composite factor = 2 × 3
3 × 17 =
918
composite factor = 3
2 × 113 =
1,017
composite factor = 3
4 × 17 =
1,377
composite factor = 17 × 113 =
1,921
composite factor = 2 × 3
2 × 113 =
2,034
composite factor = 2 × 3
4 × 17 =
2,754
composite factor = 3
3 × 113 =
3,051
composite factor = 2 × 17 × 113 =
3,842
composite factor = 3 × 17 × 113 =
5,763
composite factor = 2 × 3
3 × 113 =
6,102
composite factor = 3
4 × 113 =
9,153
composite factor = 2 × 3 × 17 × 113 =
11,526
composite factor = 3
2 × 17 × 113 =
17,289
composite factor = 2 × 3
4 × 113 =
18,306
composite factor = 2 × 3
2 × 17 × 113 =
34,578
composite factor = 3
3 × 17 × 113 =
51,867
composite factor = 2 × 3
3 × 17 × 113 =
103,734
composite factor = 3
4 × 17 × 113 =
155,601
composite factor = 2 × 3
4 × 17 × 113 =
311,202
40 factors (divisors)
What times what is 311,202?
What number multiplied by what number equals 311,202?
All the combinations of any two natural numbers whose product equals 311,202.
1 × 311,202 = 311,202
2 × 155,601 = 311,202
3 × 103,734 = 311,202
6 × 51,867 = 311,202
9 × 34,578 = 311,202
17 × 18,306 = 311,202
18 × 17,289 = 311,202
27 × 11,526 = 311,202
34 × 9,153 = 311,202
51 × 6,102 = 311,202
54 × 5,763 = 311,202
81 × 3,842 = 311,202
102 × 3,051 = 311,202
113 × 2,754 = 311,202
153 × 2,034 = 311,202
162 × 1,921 = 311,202
226 × 1,377 = 311,202
306 × 1,017 = 311,202
339 × 918 = 311,202
459 × 678 = 311,202
20 unique multiplications The final answer:
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