A:
Positive:
1 x 40400413123 x 17565397131 x 30840013013 x 134087
Negative:
-1 x -404004131-23 x -17565397-131 x -3084001-3013 x -134087
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 404,004,131, 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 | 404,004,131 | |
| -1 | -404,004,131 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 404,004,131.
Example:
1 x 404,004,131 = 404,004,131
and
-1 x -404,004,131 = 404,004,131
Notice both answers equal 404,004,131
With that explanation out of the way, let's continue. Next, we take the number 404,004,131 and divide it by 2:
404,004,131 ÷ 2 = 202,002,065.5
If the quotient is a whole number, then 2 and 202,002,065.5 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 | 404,004,131 | |
| -1 | -404,004,131 |
Now, we try dividing 404,004,131 by 3:
404,004,131 ÷ 3 = 134,668,043.6667
If the quotient is a whole number, then 3 and 134,668,043.6667 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 | 404,004,131 | |
| -1 | -404,004,131 |
Let's try dividing by 4:
404,004,131 ÷ 4 = 101,001,032.75
If the quotient is a whole number, then 4 and 101,001,032.75 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 | 404,004,131 | |
| -1 | 404,004,131 |
If you did it right, you will end up with this table:
| 1 | 23 | 131 | 3,013 | 134,087 | 3,084,001 | 17,565,397 | 404,004,131 |
| -1 | -23 | -131 | -3,013 | -134,087 | -3,084,001 | -17,565,397 | -404,004,131 |
Here are some more numbers to try:
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