A:
Positive:
1 x 127710317 x 182443313 x 98238737 x 34516391 x 140341259 x 49309481 x 265513367 x 3793
Negative:
-1 x -12771031-7 x -1824433-13 x -982387-37 x -345163-91 x -140341-259 x -49309-481 x -26551-3367 x -3793
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 12,771,031, 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 | 12,771,031 | |
| -1 | -12,771,031 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,771,031.
Example:
1 x 12,771,031 = 12,771,031
and
-1 x -12,771,031 = 12,771,031
Notice both answers equal 12,771,031
With that explanation out of the way, let's continue. Next, we take the number 12,771,031 and divide it by 2:
12,771,031 ÷ 2 = 6,385,515.5
If the quotient is a whole number, then 2 and 6,385,515.5 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 | 12,771,031 | |
| -1 | -12,771,031 |
Now, we try dividing 12,771,031 by 3:
12,771,031 ÷ 3 = 4,257,010.3333
If the quotient is a whole number, then 3 and 4,257,010.3333 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 | 12,771,031 | |
| -1 | -12,771,031 |
Let's try dividing by 4:
12,771,031 ÷ 4 = 3,192,757.75
If the quotient is a whole number, then 4 and 3,192,757.75 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 | 12,771,031 | |
| -1 | 12,771,031 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 37 | 91 | 259 | 481 | 3,367 | 3,793 | 26,551 | 49,309 | 140,341 | 345,163 | 982,387 | 1,824,433 | 12,771,031 |
| -1 | -7 | -13 | -37 | -91 | -259 | -481 | -3,367 | -3,793 | -26,551 | -49,309 | -140,341 | -345,163 | -982,387 | -1,824,433 | -12,771,031 |
Here are some more numbers to try:
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