A:
Positive:
1 x 2555512311 x 232319337 x 690679407 x 627891369 x 186671697 x 15059
Negative:
-1 x -25555123-11 x -2323193-37 x -690679-407 x -62789-1369 x -18667-1697 x -15059
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 25,555,123, 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 | 25,555,123 | |
| -1 | -25,555,123 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,555,123.
Example:
1 x 25,555,123 = 25,555,123
and
-1 x -25,555,123 = 25,555,123
Notice both answers equal 25,555,123
With that explanation out of the way, let's continue. Next, we take the number 25,555,123 and divide it by 2:
25,555,123 ÷ 2 = 12,777,561.5
If the quotient is a whole number, then 2 and 12,777,561.5 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 | 25,555,123 | |
| -1 | -25,555,123 |
Now, we try dividing 25,555,123 by 3:
25,555,123 ÷ 3 = 8,518,374.3333
If the quotient is a whole number, then 3 and 8,518,374.3333 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 | 25,555,123 | |
| -1 | -25,555,123 |
Let's try dividing by 4:
25,555,123 ÷ 4 = 6,388,780.75
If the quotient is a whole number, then 4 and 6,388,780.75 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 | 25,555,123 | |
| -1 | 25,555,123 |
If you did it right, you will end up with this table:
| 1 | 11 | 37 | 407 | 1,369 | 1,697 | 15,059 | 18,667 | 62,789 | 690,679 | 2,323,193 | 25,555,123 |
| -1 | -11 | -37 | -407 | -1,369 | -1,697 | -15,059 | -18,667 | -62,789 | -690,679 | -2,323,193 | -25,555,123 |
Here are some more numbers to try:
Try the factor calculator