To find all the divisors of the number 424,650:
- 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 424,650:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
424,650 = 2 × 3 × 52 × 19 × 149
424,650 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) × (1 + 1) × (2 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 3 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 424,650
- 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
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 2 × 5 =
10
composite factor = 3 × 5 =
15
prime factor =
19
composite factor = 5
2 =
25
composite factor = 2 × 3 × 5 =
30
composite factor = 2 × 19 =
38
composite factor = 2 × 5
2 =
50
composite factor = 3 × 19 =
57
composite factor = 3 × 5
2 =
75
composite factor = 5 × 19 =
95
composite factor = 2 × 3 × 19 =
114
prime factor =
149
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2 × 5 × 19 =
190
composite factor = 3 × 5 × 19 =
285
composite factor = 2 × 149 =
298
composite factor = 3 × 149 =
447
composite factor = 5
2 × 19 =
475
composite factor = 2 × 3 × 5 × 19 =
570
This list continues below...
... This list continues from above
composite factor = 5 × 149 =
745
composite factor = 2 × 3 × 149 =
894
composite factor = 2 × 5
2 × 19 =
950
composite factor = 3 × 5
2 × 19 =
1,425
composite factor = 2 × 5 × 149 =
1,490
composite factor = 3 × 5 × 149 =
2,235
composite factor = 19 × 149 =
2,831
composite factor = 2 × 3 × 5
2 × 19 =
2,850
composite factor = 5
2 × 149 =
3,725
composite factor = 2 × 3 × 5 × 149 =
4,470
composite factor = 2 × 19 × 149 =
5,662
composite factor = 2 × 5
2 × 149 =
7,450
composite factor = 3 × 19 × 149 =
8,493
composite factor = 3 × 5
2 × 149 =
11,175
composite factor = 5 × 19 × 149 =
14,155
composite factor = 2 × 3 × 19 × 149 =
16,986
composite factor = 2 × 3 × 5
2 × 149 =
22,350
composite factor = 2 × 5 × 19 × 149 =
28,310
composite factor = 3 × 5 × 19 × 149 =
42,465
composite factor = 5
2 × 19 × 149 =
70,775
composite factor = 2 × 3 × 5 × 19 × 149 =
84,930
composite factor = 2 × 5
2 × 19 × 149 =
141,550
composite factor = 3 × 5
2 × 19 × 149 =
212,325
composite factor = 2 × 3 × 5
2 × 19 × 149 =
424,650
48 factors (divisors)
What times what is 424,650?
What number multiplied by what number equals 424,650?
All the combinations of any two natural numbers whose product equals 424,650.
1 × 424,650 = 424,650
2 × 212,325 = 424,650
3 × 141,550 = 424,650
5 × 84,930 = 424,650
6 × 70,775 = 424,650
10 × 42,465 = 424,650
15 × 28,310 = 424,650
19 × 22,350 = 424,650
25 × 16,986 = 424,650
30 × 14,155 = 424,650
38 × 11,175 = 424,650
50 × 8,493 = 424,650
57 × 7,450 = 424,650
75 × 5,662 = 424,650
95 × 4,470 = 424,650
114 × 3,725 = 424,650
149 × 2,850 = 424,650
150 × 2,831 = 424,650
190 × 2,235 = 424,650
285 × 1,490 = 424,650
298 × 1,425 = 424,650
447 × 950 = 424,650
475 × 894 = 424,650
570 × 745 = 424,650
24 unique multiplications The final answer:
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