A:
Positive:
1 x 3124343313 x 240334117 x 1837849109 x 286637221 x 1413731297 x 240891417 x 220491853 x 16861
Negative:
-1 x -31243433-13 x -2403341-17 x -1837849-109 x -286637-221 x -141373-1297 x -24089-1417 x -22049-1853 x -16861
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 31,243,433, 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 | 31,243,433 | |
| -1 | -31,243,433 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,243,433.
Example:
1 x 31,243,433 = 31,243,433
and
-1 x -31,243,433 = 31,243,433
Notice both answers equal 31,243,433
With that explanation out of the way, let's continue. Next, we take the number 31,243,433 and divide it by 2:
31,243,433 ÷ 2 = 15,621,716.5
If the quotient is a whole number, then 2 and 15,621,716.5 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 | 31,243,433 | |
| -1 | -31,243,433 |
Now, we try dividing 31,243,433 by 3:
31,243,433 ÷ 3 = 10,414,477.6667
If the quotient is a whole number, then 3 and 10,414,477.6667 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 | 31,243,433 | |
| -1 | -31,243,433 |
Let's try dividing by 4:
31,243,433 ÷ 4 = 7,810,858.25
If the quotient is a whole number, then 4 and 7,810,858.25 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 | 31,243,433 | |
| -1 | 31,243,433 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 109 | 221 | 1,297 | 1,417 | 1,853 | 16,861 | 22,049 | 24,089 | 141,373 | 286,637 | 1,837,849 | 2,403,341 | 31,243,433 |
| -1 | -13 | -17 | -109 | -221 | -1,297 | -1,417 | -1,853 | -16,861 | -22,049 | -24,089 | -141,373 | -286,637 | -1,837,849 | -2,403,341 | -31,243,433 |
Here are some more numbers to try:
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