To find all the divisors of the number 382,850:
- 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 382,850:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
382,850 = 2 × 52 × 13 × 19 × 31
382,850 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 382,850
- 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 =
5
composite factor = 2 × 5 =
10
prime factor =
13
prime factor =
19
composite factor = 5
2 =
25
composite factor = 2 × 13 =
26
prime factor =
31
composite factor = 2 × 19 =
38
composite factor = 2 × 5
2 =
50
composite factor = 2 × 31 =
62
composite factor = 5 × 13 =
65
composite factor = 5 × 19 =
95
composite factor = 2 × 5 × 13 =
130
composite factor = 5 × 31 =
155
composite factor = 2 × 5 × 19 =
190
composite factor = 13 × 19 =
247
composite factor = 2 × 5 × 31 =
310
composite factor = 5
2 × 13 =
325
composite factor = 13 × 31 =
403
composite factor = 5
2 × 19 =
475
composite factor = 2 × 13 × 19 =
494
composite factor = 19 × 31 =
589
This list continues below...
... This list continues from above
composite factor = 2 × 5
2 × 13 =
650
composite factor = 5
2 × 31 =
775
composite factor = 2 × 13 × 31 =
806
composite factor = 2 × 5
2 × 19 =
950
composite factor = 2 × 19 × 31 =
1,178
composite factor = 5 × 13 × 19 =
1,235
composite factor = 2 × 5
2 × 31 =
1,550
composite factor = 5 × 13 × 31 =
2,015
composite factor = 2 × 5 × 13 × 19 =
2,470
composite factor = 5 × 19 × 31 =
2,945
composite factor = 2 × 5 × 13 × 31 =
4,030
composite factor = 2 × 5 × 19 × 31 =
5,890
composite factor = 5
2 × 13 × 19 =
6,175
composite factor = 13 × 19 × 31 =
7,657
composite factor = 5
2 × 13 × 31 =
10,075
composite factor = 2 × 5
2 × 13 × 19 =
12,350
composite factor = 5
2 × 19 × 31 =
14,725
composite factor = 2 × 13 × 19 × 31 =
15,314
composite factor = 2 × 5
2 × 13 × 31 =
20,150
composite factor = 2 × 5
2 × 19 × 31 =
29,450
composite factor = 5 × 13 × 19 × 31 =
38,285
composite factor = 2 × 5 × 13 × 19 × 31 =
76,570
composite factor = 5
2 × 13 × 19 × 31 =
191,425
composite factor = 2 × 5
2 × 13 × 19 × 31 =
382,850
48 factors (divisors)
What times what is 382,850?
What number multiplied by what number equals 382,850?
All the combinations of any two natural numbers whose product equals 382,850.
1 × 382,850 = 382,850
2 × 191,425 = 382,850
5 × 76,570 = 382,850
10 × 38,285 = 382,850
13 × 29,450 = 382,850
19 × 20,150 = 382,850
25 × 15,314 = 382,850
26 × 14,725 = 382,850
31 × 12,350 = 382,850
38 × 10,075 = 382,850
50 × 7,657 = 382,850
62 × 6,175 = 382,850
65 × 5,890 = 382,850
95 × 4,030 = 382,850
130 × 2,945 = 382,850
155 × 2,470 = 382,850
190 × 2,015 = 382,850
247 × 1,550 = 382,850
310 × 1,235 = 382,850
325 × 1,178 = 382,850
403 × 950 = 382,850
475 × 806 = 382,850
494 × 775 = 382,850
589 × 650 = 382,850
24 unique multiplications The final answer:
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