A:
Positive:
1 x 12888555 x 25777117 x 7581559 x 2184585 x 15163257 x 5015295 x 43691003 x 1285
Negative:
-1 x -1288855-5 x -257771-17 x -75815-59 x -21845-85 x -15163-257 x -5015-295 x -4369-1003 x -1285
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 1,288,855, 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 | 1,288,855 | |
| -1 | -1,288,855 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,288,855.
Example:
1 x 1,288,855 = 1,288,855
and
-1 x -1,288,855 = 1,288,855
Notice both answers equal 1,288,855
With that explanation out of the way, let's continue. Next, we take the number 1,288,855 and divide it by 2:
1,288,855 ÷ 2 = 644,427.5
If the quotient is a whole number, then 2 and 644,427.5 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 | 1,288,855 | |
| -1 | -1,288,855 |
Now, we try dividing 1,288,855 by 3:
1,288,855 ÷ 3 = 429,618.3333
If the quotient is a whole number, then 3 and 429,618.3333 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 | 1,288,855 | |
| -1 | -1,288,855 |
Let's try dividing by 4:
1,288,855 ÷ 4 = 322,213.75
If the quotient is a whole number, then 4 and 322,213.75 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 | 1,288,855 | |
| -1 | 1,288,855 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 59 | 85 | 257 | 295 | 1,003 | 1,285 | 4,369 | 5,015 | 15,163 | 21,845 | 75,815 | 257,771 | 1,288,855 |
| -1 | -5 | -17 | -59 | -85 | -257 | -295 | -1,003 | -1,285 | -4,369 | -5,015 | -15,163 | -21,845 | -75,815 | -257,771 | -1,288,855 |
Here are some more numbers to try:
Try the factor calculator