A:
Positive:
1 x 3840409111 x 349128129 x 1324279131 x 293161319 x 120389919 x 417891441 x 266513799 x 10109
Negative:
-1 x -38404091-11 x -3491281-29 x -1324279-131 x -293161-319 x -120389-919 x -41789-1441 x -26651-3799 x -10109
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 38,404,091, 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 | 38,404,091 | |
| -1 | -38,404,091 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 38,404,091.
Example:
1 x 38,404,091 = 38,404,091
and
-1 x -38,404,091 = 38,404,091
Notice both answers equal 38,404,091
With that explanation out of the way, let's continue. Next, we take the number 38,404,091 and divide it by 2:
38,404,091 ÷ 2 = 19,202,045.5
If the quotient is a whole number, then 2 and 19,202,045.5 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 | 38,404,091 | |
| -1 | -38,404,091 |
Now, we try dividing 38,404,091 by 3:
38,404,091 ÷ 3 = 12,801,363.6667
If the quotient is a whole number, then 3 and 12,801,363.6667 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 | 38,404,091 | |
| -1 | -38,404,091 |
Let's try dividing by 4:
38,404,091 ÷ 4 = 9,601,022.75
If the quotient is a whole number, then 4 and 9,601,022.75 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 | 38,404,091 | |
| -1 | 38,404,091 |
If you did it right, you will end up with this table:
| 1 | 11 | 29 | 131 | 319 | 919 | 1,441 | 3,799 | 10,109 | 26,651 | 41,789 | 120,389 | 293,161 | 1,324,279 | 3,491,281 | 38,404,091 |
| -1 | -11 | -29 | -131 | -319 | -919 | -1,441 | -3,799 | -10,109 | -26,651 | -41,789 | -120,389 | -293,161 | -1,324,279 | -3,491,281 | -38,404,091 |
Here are some more numbers to try:
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