A:
Positive:
1 x 27264172111 x 24785611103 x 2647007331 x 823691727 x 3750231133 x 2406373641 x 748817997 x 34093
Negative:
-1 x -272641721-11 x -24785611-103 x -2647007-331 x -823691-727 x -375023-1133 x -240637-3641 x -74881-7997 x -34093
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 272,641,721, 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 | 272,641,721 | |
| -1 | -272,641,721 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 272,641,721.
Example:
1 x 272,641,721 = 272,641,721
and
-1 x -272,641,721 = 272,641,721
Notice both answers equal 272,641,721
With that explanation out of the way, let's continue. Next, we take the number 272,641,721 and divide it by 2:
272,641,721 ÷ 2 = 136,320,860.5
If the quotient is a whole number, then 2 and 136,320,860.5 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 | 272,641,721 | |
| -1 | -272,641,721 |
Now, we try dividing 272,641,721 by 3:
272,641,721 ÷ 3 = 90,880,573.6667
If the quotient is a whole number, then 3 and 90,880,573.6667 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 | 272,641,721 | |
| -1 | -272,641,721 |
Let's try dividing by 4:
272,641,721 ÷ 4 = 68,160,430.25
If the quotient is a whole number, then 4 and 68,160,430.25 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 | 272,641,721 | |
| -1 | 272,641,721 |
If you did it right, you will end up with this table:
| 1 | 11 | 103 | 331 | 727 | 1,133 | 3,641 | 7,997 | 34,093 | 74,881 | 240,637 | 375,023 | 823,691 | 2,647,007 | 24,785,611 | 272,641,721 |
| -1 | -11 | -103 | -331 | -727 | -1,133 | -3,641 | -7,997 | -34,093 | -74,881 | -240,637 | -375,023 | -823,691 | -2,647,007 | -24,785,611 | -272,641,721 |
Here are some more numbers to try:
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