A:
Positive:
1 x 310087755 x 62017557 x 442982525 x 124035135 x 88596537 x 838075175 x 177193185 x 167615259 x 119725925 x 335231295 x 239454789 x 6475
Negative:
-1 x -31008775-5 x -6201755-7 x -4429825-25 x -1240351-35 x -885965-37 x -838075-175 x -177193-185 x -167615-259 x -119725-925 x -33523-1295 x -23945-4789 x -6475
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 31,008,775, 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 | 31,008,775 | |
| -1 | -31,008,775 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,008,775.
Example:
1 x 31,008,775 = 31,008,775
and
-1 x -31,008,775 = 31,008,775
Notice both answers equal 31,008,775
With that explanation out of the way, let's continue. Next, we take the number 31,008,775 and divide it by 2:
31,008,775 ÷ 2 = 15,504,387.5
If the quotient is a whole number, then 2 and 15,504,387.5 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 | 31,008,775 | |
| -1 | -31,008,775 |
Now, we try dividing 31,008,775 by 3:
31,008,775 ÷ 3 = 10,336,258.3333
If the quotient is a whole number, then 3 and 10,336,258.3333 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 | 31,008,775 | |
| -1 | -31,008,775 |
Let's try dividing by 4:
31,008,775 ÷ 4 = 7,752,193.75
If the quotient is a whole number, then 4 and 7,752,193.75 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 | 31,008,775 | |
| -1 | 31,008,775 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 37 | 175 | 185 | 259 | 925 | 1,295 | 4,789 | 6,475 | 23,945 | 33,523 | 119,725 | 167,615 | 177,193 | 838,075 | 885,965 | 1,240,351 | 4,429,825 | 6,201,755 | 31,008,775 |
| -1 | -5 | -7 | -25 | -35 | -37 | -175 | -185 | -259 | -925 | -1,295 | -4,789 | -6,475 | -23,945 | -33,523 | -119,725 | -167,615 | -177,193 | -838,075 | -885,965 | -1,240,351 | -4,429,825 | -6,201,755 | -31,008,775 |
Here are some more numbers to try:
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