A:
Positive:
1 x 204050355 x 40810077 x 291500535 x 583001181 x 112735905 x 225471267 x 161053221 x 6335
Negative:
-1 x -20405035-5 x -4081007-7 x -2915005-35 x -583001-181 x -112735-905 x -22547-1267 x -16105-3221 x -6335
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 20,405,035, 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 | 20,405,035 | |
| -1 | -20,405,035 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,405,035.
Example:
1 x 20,405,035 = 20,405,035
and
-1 x -20,405,035 = 20,405,035
Notice both answers equal 20,405,035
With that explanation out of the way, let's continue. Next, we take the number 20,405,035 and divide it by 2:
20,405,035 ÷ 2 = 10,202,517.5
If the quotient is a whole number, then 2 and 10,202,517.5 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 | 20,405,035 | |
| -1 | -20,405,035 |
Now, we try dividing 20,405,035 by 3:
20,405,035 ÷ 3 = 6,801,678.3333
If the quotient is a whole number, then 3 and 6,801,678.3333 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 | 20,405,035 | |
| -1 | -20,405,035 |
Let's try dividing by 4:
20,405,035 ÷ 4 = 5,101,258.75
If the quotient is a whole number, then 4 and 5,101,258.75 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 | 20,405,035 | |
| -1 | 20,405,035 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 181 | 905 | 1,267 | 3,221 | 6,335 | 16,105 | 22,547 | 112,735 | 583,001 | 2,915,005 | 4,081,007 | 20,405,035 |
| -1 | -5 | -7 | -35 | -181 | -905 | -1,267 | -3,221 | -6,335 | -16,105 | -22,547 | -112,735 | -583,001 | -2,915,005 | -4,081,007 | -20,405,035 |
Here are some more numbers to try:
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