A:
Positive:
1 x 10725672111 x 975061113 x 8250517143 x 750047461 x 2326611627 x 659235071 x 211515993 x 17897
Negative:
-1 x -107256721-11 x -9750611-13 x -8250517-143 x -750047-461 x -232661-1627 x -65923-5071 x -21151-5993 x -17897
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 107,256,721, 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 | 107,256,721 | |
| -1 | -107,256,721 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 107,256,721.
Example:
1 x 107,256,721 = 107,256,721
and
-1 x -107,256,721 = 107,256,721
Notice both answers equal 107,256,721
With that explanation out of the way, let's continue. Next, we take the number 107,256,721 and divide it by 2:
107,256,721 ÷ 2 = 53,628,360.5
If the quotient is a whole number, then 2 and 53,628,360.5 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 | 107,256,721 | |
| -1 | -107,256,721 |
Now, we try dividing 107,256,721 by 3:
107,256,721 ÷ 3 = 35,752,240.3333
If the quotient is a whole number, then 3 and 35,752,240.3333 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 | 107,256,721 | |
| -1 | -107,256,721 |
Let's try dividing by 4:
107,256,721 ÷ 4 = 26,814,180.25
If the quotient is a whole number, then 4 and 26,814,180.25 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 | 107,256,721 | |
| -1 | 107,256,721 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 461 | 1,627 | 5,071 | 5,993 | 17,897 | 21,151 | 65,923 | 232,661 | 750,047 | 8,250,517 | 9,750,611 | 107,256,721 |
| -1 | -11 | -13 | -143 | -461 | -1,627 | -5,071 | -5,993 | -17,897 | -21,151 | -65,923 | -232,661 | -750,047 | -8,250,517 | -9,750,611 | -107,256,721 |
Here are some more numbers to try:
Try the factor calculator