A:
Positive:
1 x 259056055 x 518112111 x 235505553 x 48878555 x 471011265 x 97757583 x 444352915 x 8887
Negative:
-1 x -25905605-5 x -5181121-11 x -2355055-53 x -488785-55 x -471011-265 x -97757-583 x -44435-2915 x -8887
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 25,905,605, 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 | 25,905,605 | |
| -1 | -25,905,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,905,605.
Example:
1 x 25,905,605 = 25,905,605
and
-1 x -25,905,605 = 25,905,605
Notice both answers equal 25,905,605
With that explanation out of the way, let's continue. Next, we take the number 25,905,605 and divide it by 2:
25,905,605 ÷ 2 = 12,952,802.5
If the quotient is a whole number, then 2 and 12,952,802.5 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 | 25,905,605 | |
| -1 | -25,905,605 |
Now, we try dividing 25,905,605 by 3:
25,905,605 ÷ 3 = 8,635,201.6667
If the quotient is a whole number, then 3 and 8,635,201.6667 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 | 25,905,605 | |
| -1 | -25,905,605 |
Let's try dividing by 4:
25,905,605 ÷ 4 = 6,476,401.25
If the quotient is a whole number, then 4 and 6,476,401.25 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 | 25,905,605 | |
| -1 | 25,905,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 53 | 55 | 265 | 583 | 2,915 | 8,887 | 44,435 | 97,757 | 471,011 | 488,785 | 2,355,055 | 5,181,121 | 25,905,605 |
| -1 | -5 | -11 | -53 | -55 | -265 | -583 | -2,915 | -8,887 | -44,435 | -97,757 | -471,011 | -488,785 | -2,355,055 | -5,181,121 | -25,905,605 |
Here are some more numbers to try:
Try the factor calculator