A:
Positive:
1 x 26044872113 x 2003451717 x 1532051343 x 6056947221 x 1178501559 x 465919731 x 3562919503 x 27407
Negative:
-1 x -260448721-13 x -20034517-17 x -15320513-43 x -6056947-221 x -1178501-559 x -465919-731 x -356291-9503 x -27407
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 260,448,721, 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 | 260,448,721 | |
| -1 | -260,448,721 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 260,448,721.
Example:
1 x 260,448,721 = 260,448,721
and
-1 x -260,448,721 = 260,448,721
Notice both answers equal 260,448,721
With that explanation out of the way, let's continue. Next, we take the number 260,448,721 and divide it by 2:
260,448,721 ÷ 2 = 130,224,360.5
If the quotient is a whole number, then 2 and 130,224,360.5 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 | 260,448,721 | |
| -1 | -260,448,721 |
Now, we try dividing 260,448,721 by 3:
260,448,721 ÷ 3 = 86,816,240.3333
If the quotient is a whole number, then 3 and 86,816,240.3333 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 | 260,448,721 | |
| -1 | -260,448,721 |
Let's try dividing by 4:
260,448,721 ÷ 4 = 65,112,180.25
If the quotient is a whole number, then 4 and 65,112,180.25 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 | 260,448,721 | |
| -1 | 260,448,721 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 43 | 221 | 559 | 731 | 9,503 | 27,407 | 356,291 | 465,919 | 1,178,501 | 6,056,947 | 15,320,513 | 20,034,517 | 260,448,721 |
| -1 | -13 | -17 | -43 | -221 | -559 | -731 | -9,503 | -27,407 | -356,291 | -465,919 | -1,178,501 | -6,056,947 | -15,320,513 | -20,034,517 | -260,448,721 |
Here are some more numbers to try:
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