To find all the divisors of the number 492,450:
- 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 492,450:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
492,450 = 2 × 3 × 52 × 72 × 67
492,450 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) × (2 + 1) × (1 + 1) = 2 × 2 × 3 × 3 × 2 = 72
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 492,450
- 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
prime factor =
7
composite factor = 2 × 5 =
10
composite factor = 2 × 7 =
14
composite factor = 3 × 5 =
15
composite factor = 3 × 7 =
21
composite factor = 5
2 =
25
composite factor = 2 × 3 × 5 =
30
composite factor = 5 × 7 =
35
composite factor = 2 × 3 × 7 =
42
composite factor = 7
2 =
49
composite factor = 2 × 5
2 =
50
prime factor =
67
composite factor = 2 × 5 × 7 =
70
composite factor = 3 × 5
2 =
75
composite factor = 2 × 7
2 =
98
composite factor = 3 × 5 × 7 =
105
composite factor = 2 × 67 =
134
composite factor = 3 × 7
2 =
147
composite factor = 2 × 3 × 5
2 =
150
composite factor = 5
2 × 7 =
175
composite factor = 3 × 67 =
201
composite factor = 2 × 3 × 5 × 7 =
210
composite factor = 5 × 7
2 =
245
composite factor = 2 × 3 × 7
2 =
294
composite factor = 5 × 67 =
335
composite factor = 2 × 5
2 × 7 =
350
composite factor = 2 × 3 × 67 =
402
composite factor = 7 × 67 =
469
composite factor = 2 × 5 × 7
2 =
490
composite factor = 3 × 5
2 × 7 =
525
composite factor = 2 × 5 × 67 =
670
This list continues below...
... This list continues from above
composite factor = 3 × 5 × 7
2 =
735
composite factor = 2 × 7 × 67 =
938
composite factor = 3 × 5 × 67 =
1,005
composite factor = 2 × 3 × 5
2 × 7 =
1,050
composite factor = 5
2 × 7
2 =
1,225
composite factor = 3 × 7 × 67 =
1,407
composite factor = 2 × 3 × 5 × 7
2 =
1,470
composite factor = 5
2 × 67 =
1,675
composite factor = 2 × 3 × 5 × 67 =
2,010
composite factor = 5 × 7 × 67 =
2,345
composite factor = 2 × 5
2 × 7
2 =
2,450
composite factor = 2 × 3 × 7 × 67 =
2,814
composite factor = 7
2 × 67 =
3,283
composite factor = 2 × 5
2 × 67 =
3,350
composite factor = 3 × 5
2 × 7
2 =
3,675
composite factor = 2 × 5 × 7 × 67 =
4,690
composite factor = 3 × 5
2 × 67 =
5,025
composite factor = 2 × 7
2 × 67 =
6,566
composite factor = 3 × 5 × 7 × 67 =
7,035
composite factor = 2 × 3 × 5
2 × 7
2 =
7,350
composite factor = 3 × 7
2 × 67 =
9,849
composite factor = 2 × 3 × 5
2 × 67 =
10,050
composite factor = 5
2 × 7 × 67 =
11,725
composite factor = 2 × 3 × 5 × 7 × 67 =
14,070
composite factor = 5 × 7
2 × 67 =
16,415
composite factor = 2 × 3 × 7
2 × 67 =
19,698
composite factor = 2 × 5
2 × 7 × 67 =
23,450
composite factor = 2 × 5 × 7
2 × 67 =
32,830
composite factor = 3 × 5
2 × 7 × 67 =
35,175
composite factor = 3 × 5 × 7
2 × 67 =
49,245
composite factor = 2 × 3 × 5
2 × 7 × 67 =
70,350
composite factor = 5
2 × 7
2 × 67 =
82,075
composite factor = 2 × 3 × 5 × 7
2 × 67 =
98,490
composite factor = 2 × 5
2 × 7
2 × 67 =
164,150
composite factor = 3 × 5
2 × 7
2 × 67 =
246,225
composite factor = 2 × 3 × 5
2 × 7
2 × 67 =
492,450
72 factors (divisors)
What times what is 492,450?
What number multiplied by what number equals 492,450?
All the combinations of any two natural numbers whose product equals 492,450.
1 × 492,450 = 492,450
2 × 246,225 = 492,450
3 × 164,150 = 492,450
5 × 98,490 = 492,450
6 × 82,075 = 492,450
7 × 70,350 = 492,450
10 × 49,245 = 492,450
14 × 35,175 = 492,450
15 × 32,830 = 492,450
21 × 23,450 = 492,450
25 × 19,698 = 492,450
30 × 16,415 = 492,450
35 × 14,070 = 492,450
42 × 11,725 = 492,450
49 × 10,050 = 492,450
50 × 9,849 = 492,450
67 × 7,350 = 492,450
70 × 7,035 = 492,450
75 × 6,566 = 492,450
98 × 5,025 = 492,450
105 × 4,690 = 492,450
134 × 3,675 = 492,450
147 × 3,350 = 492,450
150 × 3,283 = 492,450
175 × 2,814 = 492,450
201 × 2,450 = 492,450
210 × 2,345 = 492,450
245 × 2,010 = 492,450
294 × 1,675 = 492,450
335 × 1,470 = 492,450
350 × 1,407 = 492,450
402 × 1,225 = 492,450
469 × 1,050 = 492,450
490 × 1,005 = 492,450
525 × 938 = 492,450
670 × 735 = 492,450
36 unique multiplications The final answer:
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