A:
Positive:
1 x 25361324313 x 1950871189 x 2849587109 x 23267271157 x 2191991417 x 1789792011 x 1261139701 x 26143
Negative:
-1 x -253613243-13 x -19508711-89 x -2849587-109 x -2326727-1157 x -219199-1417 x -178979-2011 x -126113-9701 x -26143
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 253,613,243, 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 | 253,613,243 | |
| -1 | -253,613,243 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 253,613,243.
Example:
1 x 253,613,243 = 253,613,243
and
-1 x -253,613,243 = 253,613,243
Notice both answers equal 253,613,243
With that explanation out of the way, let's continue. Next, we take the number 253,613,243 and divide it by 2:
253,613,243 ÷ 2 = 126,806,621.5
If the quotient is a whole number, then 2 and 126,806,621.5 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 | 253,613,243 | |
| -1 | -253,613,243 |
Now, we try dividing 253,613,243 by 3:
253,613,243 ÷ 3 = 84,537,747.6667
If the quotient is a whole number, then 3 and 84,537,747.6667 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 | 253,613,243 | |
| -1 | -253,613,243 |
Let's try dividing by 4:
253,613,243 ÷ 4 = 63,403,310.75
If the quotient is a whole number, then 4 and 63,403,310.75 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 | 253,613,243 | |
| -1 | 253,613,243 |
If you did it right, you will end up with this table:
| 1 | 13 | 89 | 109 | 1,157 | 1,417 | 2,011 | 9,701 | 26,143 | 126,113 | 178,979 | 219,199 | 2,326,727 | 2,849,587 | 19,508,711 | 253,613,243 |
| -1 | -13 | -89 | -109 | -1,157 | -1,417 | -2,011 | -9,701 | -26,143 | -126,113 | -178,979 | -219,199 | -2,326,727 | -2,849,587 | -19,508,711 | -253,613,243 |
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