A:
Positive:
1 x 318636855 x 63727377 x 455195535 x 910391383 x 831951915 x 166392377 x 134052681 x 11885
Negative:
-1 x -31863685-5 x -6372737-7 x -4551955-35 x -910391-383 x -83195-1915 x -16639-2377 x -13405-2681 x -11885
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 31,863,685, 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 | 31,863,685 | |
| -1 | -31,863,685 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,863,685.
Example:
1 x 31,863,685 = 31,863,685
and
-1 x -31,863,685 = 31,863,685
Notice both answers equal 31,863,685
With that explanation out of the way, let's continue. Next, we take the number 31,863,685 and divide it by 2:
31,863,685 ÷ 2 = 15,931,842.5
If the quotient is a whole number, then 2 and 15,931,842.5 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 | 31,863,685 | |
| -1 | -31,863,685 |
Now, we try dividing 31,863,685 by 3:
31,863,685 ÷ 3 = 10,621,228.3333
If the quotient is a whole number, then 3 and 10,621,228.3333 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 | 31,863,685 | |
| -1 | -31,863,685 |
Let's try dividing by 4:
31,863,685 ÷ 4 = 7,965,921.25
If the quotient is a whole number, then 4 and 7,965,921.25 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 | 31,863,685 | |
| -1 | 31,863,685 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 383 | 1,915 | 2,377 | 2,681 | 11,885 | 13,405 | 16,639 | 83,195 | 910,391 | 4,551,955 | 6,372,737 | 31,863,685 |
| -1 | -5 | -7 | -35 | -383 | -1,915 | -2,377 | -2,681 | -11,885 | -13,405 | -16,639 | -83,195 | -910,391 | -4,551,955 | -6,372,737 | -31,863,685 |
Here are some more numbers to try:
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