A:
Positive:
1 x 81878755 x 163757525 x 32751531 x 264125125 x 65503155 x 52825775 x 105652113 x 3875
Negative:
-1 x -8187875-5 x -1637575-25 x -327515-31 x -264125-125 x -65503-155 x -52825-775 x -10565-2113 x -3875
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 8,187,875, 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 | 8,187,875 | |
| -1 | -8,187,875 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 8,187,875.
Example:
1 x 8,187,875 = 8,187,875
and
-1 x -8,187,875 = 8,187,875
Notice both answers equal 8,187,875
With that explanation out of the way, let's continue. Next, we take the number 8,187,875 and divide it by 2:
8,187,875 ÷ 2 = 4,093,937.5
If the quotient is a whole number, then 2 and 4,093,937.5 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 | 8,187,875 | |
| -1 | -8,187,875 |
Now, we try dividing 8,187,875 by 3:
8,187,875 ÷ 3 = 2,729,291.6667
If the quotient is a whole number, then 3 and 2,729,291.6667 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 | 8,187,875 | |
| -1 | -8,187,875 |
Let's try dividing by 4:
8,187,875 ÷ 4 = 2,046,968.75
If the quotient is a whole number, then 4 and 2,046,968.75 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 | 8,187,875 | |
| -1 | 8,187,875 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 31 | 125 | 155 | 775 | 2,113 | 3,875 | 10,565 | 52,825 | 65,503 | 264,125 | 327,515 | 1,637,575 | 8,187,875 |
| -1 | -5 | -25 | -31 | -125 | -155 | -775 | -2,113 | -3,875 | -10,565 | -52,825 | -65,503 | -264,125 | -327,515 | -1,637,575 | -8,187,875 |
Here are some more numbers to try:
Try the factor calculator