A:
Positive:
1 x 24777595711 x 2252508713 x 19059689143 x 1732699523 x 4737593313 x 747895753 x 430696799 x 36443
Negative:
-1 x -247775957-11 x -22525087-13 x -19059689-143 x -1732699-523 x -473759-3313 x -74789-5753 x -43069-6799 x -36443
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 247,775,957, 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 | 247,775,957 | |
| -1 | -247,775,957 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 247,775,957.
Example:
1 x 247,775,957 = 247,775,957
and
-1 x -247,775,957 = 247,775,957
Notice both answers equal 247,775,957
With that explanation out of the way, let's continue. Next, we take the number 247,775,957 and divide it by 2:
247,775,957 ÷ 2 = 123,887,978.5
If the quotient is a whole number, then 2 and 123,887,978.5 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 | 247,775,957 | |
| -1 | -247,775,957 |
Now, we try dividing 247,775,957 by 3:
247,775,957 ÷ 3 = 82,591,985.6667
If the quotient is a whole number, then 3 and 82,591,985.6667 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 | 247,775,957 | |
| -1 | -247,775,957 |
Let's try dividing by 4:
247,775,957 ÷ 4 = 61,943,989.25
If the quotient is a whole number, then 4 and 61,943,989.25 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 | 247,775,957 | |
| -1 | 247,775,957 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 523 | 3,313 | 5,753 | 6,799 | 36,443 | 43,069 | 74,789 | 473,759 | 1,732,699 | 19,059,689 | 22,525,087 | 247,775,957 |
| -1 | -11 | -13 | -143 | -523 | -3,313 | -5,753 | -6,799 | -36,443 | -43,069 | -74,789 | -473,759 | -1,732,699 | -19,059,689 | -22,525,087 | -247,775,957 |
Here are some more numbers to try:
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