A:
Positive:
1 x 255166155 x 510332359 x 43248567 x 380845295 x 86497335 x 761691291 x 197653953 x 6455
Negative:
-1 x -25516615-5 x -5103323-59 x -432485-67 x -380845-295 x -86497-335 x -76169-1291 x -19765-3953 x -6455
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 25,516,615, 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 | 25,516,615 | |
| -1 | -25,516,615 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,516,615.
Example:
1 x 25,516,615 = 25,516,615
and
-1 x -25,516,615 = 25,516,615
Notice both answers equal 25,516,615
With that explanation out of the way, let's continue. Next, we take the number 25,516,615 and divide it by 2:
25,516,615 ÷ 2 = 12,758,307.5
If the quotient is a whole number, then 2 and 12,758,307.5 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 | 25,516,615 | |
| -1 | -25,516,615 |
Now, we try dividing 25,516,615 by 3:
25,516,615 ÷ 3 = 8,505,538.3333
If the quotient is a whole number, then 3 and 8,505,538.3333 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 | 25,516,615 | |
| -1 | -25,516,615 |
Let's try dividing by 4:
25,516,615 ÷ 4 = 6,379,153.75
If the quotient is a whole number, then 4 and 6,379,153.75 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 | 25,516,615 | |
| -1 | 25,516,615 |
If you did it right, you will end up with this table:
| 1 | 5 | 59 | 67 | 295 | 335 | 1,291 | 3,953 | 6,455 | 19,765 | 76,169 | 86,497 | 380,845 | 432,485 | 5,103,323 | 25,516,615 |
| -1 | -5 | -59 | -67 | -295 | -335 | -1,291 | -3,953 | -6,455 | -19,765 | -76,169 | -86,497 | -380,845 | -432,485 | -5,103,323 | -25,516,615 |
Here are some more numbers to try:
Try the factor calculator