A:
Positive:
1 x 2317256155 x 4634512311 x 2106596519 x 1219608555 x 421319395 x 2439217209 x 11087351045 x 221747
Negative:
-1 x -231725615-5 x -46345123-11 x -21065965-19 x -12196085-55 x -4213193-95 x -2439217-209 x -1108735-1045 x -221747
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 231,725,615, 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 | 231,725,615 | |
| -1 | -231,725,615 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 231,725,615.
Example:
1 x 231,725,615 = 231,725,615
and
-1 x -231,725,615 = 231,725,615
Notice both answers equal 231,725,615
With that explanation out of the way, let's continue. Next, we take the number 231,725,615 and divide it by 2:
231,725,615 ÷ 2 = 115,862,807.5
If the quotient is a whole number, then 2 and 115,862,807.5 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 | 231,725,615 | |
| -1 | -231,725,615 |
Now, we try dividing 231,725,615 by 3:
231,725,615 ÷ 3 = 77,241,871.6667
If the quotient is a whole number, then 3 and 77,241,871.6667 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 | 231,725,615 | |
| -1 | -231,725,615 |
Let's try dividing by 4:
231,725,615 ÷ 4 = 57,931,403.75
If the quotient is a whole number, then 4 and 57,931,403.75 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 | 231,725,615 | |
| -1 | 231,725,615 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 19 | 55 | 95 | 209 | 1,045 | 221,747 | 1,108,735 | 2,439,217 | 4,213,193 | 12,196,085 | 21,065,965 | 46,345,123 | 231,725,615 |
| -1 | -5 | -11 | -19 | -55 | -95 | -209 | -1,045 | -221,747 | -1,108,735 | -2,439,217 | -4,213,193 | -12,196,085 | -21,065,965 | -46,345,123 | -231,725,615 |
Here are some more numbers to try:
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