A:
Positive:
1 x 12551570911 x 1141051917 x 738327747 x 2670547187 x 671207517 x 242777799 x 1570918789 x 14281
Negative:
-1 x -125515709-11 x -11410519-17 x -7383277-47 x -2670547-187 x -671207-517 x -242777-799 x -157091-8789 x -14281
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 125,515,709, 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 | 125,515,709 | |
| -1 | -125,515,709 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 125,515,709.
Example:
1 x 125,515,709 = 125,515,709
and
-1 x -125,515,709 = 125,515,709
Notice both answers equal 125,515,709
With that explanation out of the way, let's continue. Next, we take the number 125,515,709 and divide it by 2:
125,515,709 ÷ 2 = 62,757,854.5
If the quotient is a whole number, then 2 and 62,757,854.5 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 | 125,515,709 | |
| -1 | -125,515,709 |
Now, we try dividing 125,515,709 by 3:
125,515,709 ÷ 3 = 41,838,569.6667
If the quotient is a whole number, then 3 and 41,838,569.6667 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 | 125,515,709 | |
| -1 | -125,515,709 |
Let's try dividing by 4:
125,515,709 ÷ 4 = 31,378,927.25
If the quotient is a whole number, then 4 and 31,378,927.25 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 | 125,515,709 | |
| -1 | 125,515,709 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 47 | 187 | 517 | 799 | 8,789 | 14,281 | 157,091 | 242,777 | 671,207 | 2,670,547 | 7,383,277 | 11,410,519 | 125,515,709 |
| -1 | -11 | -17 | -47 | -187 | -517 | -799 | -8,789 | -14,281 | -157,091 | -242,777 | -671,207 | -2,670,547 | -7,383,277 | -11,410,519 | -125,515,709 |
Here are some more numbers to try:
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