A:
Positive:
1 x 2477491255 x 4954982513 x 1905762525 x 990996565 x 3811525125 x 1981993325 x 7623051625 x 152461
Negative:
-1 x -247749125-5 x -49549825-13 x -19057625-25 x -9909965-65 x -3811525-125 x -1981993-325 x -762305-1625 x -152461
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 247,749,125, 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 | 247,749,125 | |
| -1 | -247,749,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 247,749,125.
Example:
1 x 247,749,125 = 247,749,125
and
-1 x -247,749,125 = 247,749,125
Notice both answers equal 247,749,125
With that explanation out of the way, let's continue. Next, we take the number 247,749,125 and divide it by 2:
247,749,125 ÷ 2 = 123,874,562.5
If the quotient is a whole number, then 2 and 123,874,562.5 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 | 247,749,125 | |
| -1 | -247,749,125 |
Now, we try dividing 247,749,125 by 3:
247,749,125 ÷ 3 = 82,583,041.6667
If the quotient is a whole number, then 3 and 82,583,041.6667 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 | 247,749,125 | |
| -1 | -247,749,125 |
Let's try dividing by 4:
247,749,125 ÷ 4 = 61,937,281.25
If the quotient is a whole number, then 4 and 61,937,281.25 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 | 247,749,125 | |
| -1 | 247,749,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 65 | 125 | 325 | 1,625 | 152,461 | 762,305 | 1,981,993 | 3,811,525 | 9,909,965 | 19,057,625 | 49,549,825 | 247,749,125 |
| -1 | -5 | -13 | -25 | -65 | -125 | -325 | -1,625 | -152,461 | -762,305 | -1,981,993 | -3,811,525 | -9,909,965 | -19,057,625 | -49,549,825 | -247,749,125 |
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