A:
Positive:
1 x 128681355 x 25736277 x 183830535 x 36766149 x 26261553 x 242795245 x 52523265 x 48559371 x 34685991 x 129851855 x 69372597 x 4955
Negative:
-1 x -12868135-5 x -2573627-7 x -1838305-35 x -367661-49 x -262615-53 x -242795-245 x -52523-265 x -48559-371 x -34685-991 x -12985-1855 x -6937-2597 x -4955
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 12,868,135, 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 | 12,868,135 | |
| -1 | -12,868,135 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,868,135.
Example:
1 x 12,868,135 = 12,868,135
and
-1 x -12,868,135 = 12,868,135
Notice both answers equal 12,868,135
With that explanation out of the way, let's continue. Next, we take the number 12,868,135 and divide it by 2:
12,868,135 ÷ 2 = 6,434,067.5
If the quotient is a whole number, then 2 and 6,434,067.5 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 | 12,868,135 | |
| -1 | -12,868,135 |
Now, we try dividing 12,868,135 by 3:
12,868,135 ÷ 3 = 4,289,378.3333
If the quotient is a whole number, then 3 and 4,289,378.3333 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 | 12,868,135 | |
| -1 | -12,868,135 |
Let's try dividing by 4:
12,868,135 ÷ 4 = 3,217,033.75
If the quotient is a whole number, then 4 and 3,217,033.75 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 | 12,868,135 | |
| -1 | 12,868,135 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 53 | 245 | 265 | 371 | 991 | 1,855 | 2,597 | 4,955 | 6,937 | 12,985 | 34,685 | 48,559 | 52,523 | 242,795 | 262,615 | 367,661 | 1,838,305 | 2,573,627 | 12,868,135 |
| -1 | -5 | -7 | -35 | -49 | -53 | -245 | -265 | -371 | -991 | -1,855 | -2,597 | -4,955 | -6,937 | -12,985 | -34,685 | -48,559 | -52,523 | -242,795 | -262,615 | -367,661 | -1,838,305 | -2,573,627 | -12,868,135 |
Here are some more numbers to try:
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