A:
Positive:
1 x 315051355 x 630102719 x 165816595 x 331633541 x 58235613 x 513952705 x 116473065 x 10279
Negative:
-1 x -31505135-5 x -6301027-19 x -1658165-95 x -331633-541 x -58235-613 x -51395-2705 x -11647-3065 x -10279
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 31,505,135, 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 | 31,505,135 | |
| -1 | -31,505,135 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,505,135.
Example:
1 x 31,505,135 = 31,505,135
and
-1 x -31,505,135 = 31,505,135
Notice both answers equal 31,505,135
With that explanation out of the way, let's continue. Next, we take the number 31,505,135 and divide it by 2:
31,505,135 ÷ 2 = 15,752,567.5
If the quotient is a whole number, then 2 and 15,752,567.5 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 | 31,505,135 | |
| -1 | -31,505,135 |
Now, we try dividing 31,505,135 by 3:
31,505,135 ÷ 3 = 10,501,711.6667
If the quotient is a whole number, then 3 and 10,501,711.6667 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 | 31,505,135 | |
| -1 | -31,505,135 |
Let's try dividing by 4:
31,505,135 ÷ 4 = 7,876,283.75
If the quotient is a whole number, then 4 and 7,876,283.75 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 | 31,505,135 | |
| -1 | 31,505,135 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 541 | 613 | 2,705 | 3,065 | 10,279 | 11,647 | 51,395 | 58,235 | 331,633 | 1,658,165 | 6,301,027 | 31,505,135 |
| -1 | -5 | -19 | -95 | -541 | -613 | -2,705 | -3,065 | -10,279 | -11,647 | -51,395 | -58,235 | -331,633 | -1,658,165 | -6,301,027 | -31,505,135 |
Here are some more numbers to try:
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