A:
Positive:
1 x 128649855 x 25729977 x 183785535 x 367571137 x 93905685 x 18781959 x 134152683 x 4795
Negative:
-1 x -12864985-5 x -2572997-7 x -1837855-35 x -367571-137 x -93905-685 x -18781-959 x -13415-2683 x -4795
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 12,864,985, 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 | 12,864,985 | |
| -1 | -12,864,985 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,864,985.
Example:
1 x 12,864,985 = 12,864,985
and
-1 x -12,864,985 = 12,864,985
Notice both answers equal 12,864,985
With that explanation out of the way, let's continue. Next, we take the number 12,864,985 and divide it by 2:
12,864,985 ÷ 2 = 6,432,492.5
If the quotient is a whole number, then 2 and 6,432,492.5 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 | 12,864,985 | |
| -1 | -12,864,985 |
Now, we try dividing 12,864,985 by 3:
12,864,985 ÷ 3 = 4,288,328.3333
If the quotient is a whole number, then 3 and 4,288,328.3333 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 | 12,864,985 | |
| -1 | -12,864,985 |
Let's try dividing by 4:
12,864,985 ÷ 4 = 3,216,246.25
If the quotient is a whole number, then 4 and 3,216,246.25 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 | 12,864,985 | |
| -1 | 12,864,985 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 137 | 685 | 959 | 2,683 | 4,795 | 13,415 | 18,781 | 93,905 | 367,571 | 1,837,855 | 2,572,997 | 12,864,985 |
| -1 | -5 | -7 | -35 | -137 | -685 | -959 | -2,683 | -4,795 | -13,415 | -18,781 | -93,905 | -367,571 | -1,837,855 | -2,572,997 | -12,864,985 |
Here are some more numbers to try:
Try the factor calculator