A:
Positive:
1 x 2740279113 x 210790731 x 88396197 x 282503403 x 67997701 x 390911261 x 217313007 x 9113
Negative:
-1 x -27402791-13 x -2107907-31 x -883961-97 x -282503-403 x -67997-701 x -39091-1261 x -21731-3007 x -9113
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 27,402,791, 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 | 27,402,791 | |
| -1 | -27,402,791 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 27,402,791.
Example:
1 x 27,402,791 = 27,402,791
and
-1 x -27,402,791 = 27,402,791
Notice both answers equal 27,402,791
With that explanation out of the way, let's continue. Next, we take the number 27,402,791 and divide it by 2:
27,402,791 ÷ 2 = 13,701,395.5
If the quotient is a whole number, then 2 and 13,701,395.5 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 | 27,402,791 | |
| -1 | -27,402,791 |
Now, we try dividing 27,402,791 by 3:
27,402,791 ÷ 3 = 9,134,263.6667
If the quotient is a whole number, then 3 and 9,134,263.6667 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 | 27,402,791 | |
| -1 | -27,402,791 |
Let's try dividing by 4:
27,402,791 ÷ 4 = 6,850,697.75
If the quotient is a whole number, then 4 and 6,850,697.75 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 | 27,402,791 | |
| -1 | 27,402,791 |
If you did it right, you will end up with this table:
| 1 | 13 | 31 | 97 | 403 | 701 | 1,261 | 3,007 | 9,113 | 21,731 | 39,091 | 67,997 | 282,503 | 883,961 | 2,107,907 | 27,402,791 |
| -1 | -13 | -31 | -97 | -403 | -701 | -1,261 | -3,007 | -9,113 | -21,731 | -39,091 | -67,997 | -282,503 | -883,961 | -2,107,907 | -27,402,791 |
Here are some more numbers to try:
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