A:
Positive:
1 x 311471755 x 622943519 x 163932523 x 135422525 x 124588795 x 327865115 x 270845437 x 71275475 x 65573575 x 541692185 x 142552851 x 10925
Negative:
-1 x -31147175-5 x -6229435-19 x -1639325-23 x -1354225-25 x -1245887-95 x -327865-115 x -270845-437 x -71275-475 x -65573-575 x -54169-2185 x -14255-2851 x -10925
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 31,147,175, 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 | 31,147,175 | |
| -1 | -31,147,175 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,147,175.
Example:
1 x 31,147,175 = 31,147,175
and
-1 x -31,147,175 = 31,147,175
Notice both answers equal 31,147,175
With that explanation out of the way, let's continue. Next, we take the number 31,147,175 and divide it by 2:
31,147,175 ÷ 2 = 15,573,587.5
If the quotient is a whole number, then 2 and 15,573,587.5 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 | 31,147,175 | |
| -1 | -31,147,175 |
Now, we try dividing 31,147,175 by 3:
31,147,175 ÷ 3 = 10,382,391.6667
If the quotient is a whole number, then 3 and 10,382,391.6667 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 | 31,147,175 | |
| -1 | -31,147,175 |
Let's try dividing by 4:
31,147,175 ÷ 4 = 7,786,793.75
If the quotient is a whole number, then 4 and 7,786,793.75 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 | 31,147,175 | |
| -1 | 31,147,175 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 23 | 25 | 95 | 115 | 437 | 475 | 575 | 2,185 | 2,851 | 10,925 | 14,255 | 54,169 | 65,573 | 71,275 | 270,845 | 327,865 | 1,245,887 | 1,354,225 | 1,639,325 | 6,229,435 | 31,147,175 |
| -1 | -5 | -19 | -23 | -25 | -95 | -115 | -437 | -475 | -575 | -2,185 | -2,851 | -10,925 | -14,255 | -54,169 | -65,573 | -71,275 | -270,845 | -327,865 | -1,245,887 | -1,354,225 | -1,639,325 | -6,229,435 | -31,147,175 |
Here are some more numbers to try:
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