A:
Positive:
1 x 131401255 x 262802525 x 52560531 x 423875125 x 105121155 x 84775775 x 169553391 x 3875
Negative:
-1 x -13140125-5 x -2628025-25 x -525605-31 x -423875-125 x -105121-155 x -84775-775 x -16955-3391 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 13,140,125, 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 | 13,140,125 | |
| -1 | -13,140,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,140,125.
Example:
1 x 13,140,125 = 13,140,125
and
-1 x -13,140,125 = 13,140,125
Notice both answers equal 13,140,125
With that explanation out of the way, let's continue. Next, we take the number 13,140,125 and divide it by 2:
13,140,125 ÷ 2 = 6,570,062.5
If the quotient is a whole number, then 2 and 6,570,062.5 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 | 13,140,125 | |
| -1 | -13,140,125 |
Now, we try dividing 13,140,125 by 3:
13,140,125 ÷ 3 = 4,380,041.6667
If the quotient is a whole number, then 3 and 4,380,041.6667 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 | 13,140,125 | |
| -1 | -13,140,125 |
Let's try dividing by 4:
13,140,125 ÷ 4 = 3,285,031.25
If the quotient is a whole number, then 4 and 3,285,031.25 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 | 13,140,125 | |
| -1 | 13,140,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 31 | 125 | 155 | 775 | 3,391 | 3,875 | 16,955 | 84,775 | 105,121 | 423,875 | 525,605 | 2,628,025 | 13,140,125 |
| -1 | -5 | -25 | -31 | -125 | -155 | -775 | -3,391 | -3,875 | -16,955 | -84,775 | -105,121 | -423,875 | -525,605 | -2,628,025 | -13,140,125 |
Here are some more numbers to try:
Try the factor calculator