A:
Positive:
1 x 203423055 x 406846147 x 432815107 x 190115235 x 86563535 x 38023809 x 251454045 x 5029
Negative:
-1 x -20342305-5 x -4068461-47 x -432815-107 x -190115-235 x -86563-535 x -38023-809 x -25145-4045 x -5029
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 20,342,305, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 20,342,305 | |
| -1 | -20,342,305 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,342,305.
Example:
1 x 20,342,305 = 20,342,305
and
-1 x -20,342,305 = 20,342,305
Notice both answers equal 20,342,305
With that explanation out of the way, let's continue. Next, we take the number 20,342,305 and divide it by 2:
20,342,305 ÷ 2 = 10,171,152.5
If the quotient is a whole number, then 2 and 10,171,152.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 20,342,305 | |
| -1 | -20,342,305 |
Now, we try dividing 20,342,305 by 3:
20,342,305 ÷ 3 = 6,780,768.3333
If the quotient is a whole number, then 3 and 6,780,768.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 20,342,305 | |
| -1 | -20,342,305 |
Let's try dividing by 4:
20,342,305 ÷ 4 = 5,085,576.25
If the quotient is a whole number, then 4 and 5,085,576.25 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 20,342,305 | |
| -1 | 20,342,305 |
If you did it right, you will end up with this table:
| 1 | 5 | 47 | 107 | 235 | 535 | 809 | 4,045 | 5,029 | 25,145 | 38,023 | 86,563 | 190,115 | 432,815 | 4,068,461 | 20,342,305 |
| -1 | -5 | -47 | -107 | -235 | -535 | -809 | -4,045 | -5,029 | -25,145 | -38,023 | -86,563 | -190,115 | -432,815 | -4,068,461 | -20,342,305 |
Here are some more numbers to try:
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