A:
Positive:
1 x 202041355 x 40408277 x 288630535 x 577261227 x 890051135 x 178011589 x 127152543 x 7945
Negative:
-1 x -20204135-5 x -4040827-7 x -2886305-35 x -577261-227 x -89005-1135 x -17801-1589 x -12715-2543 x -7945
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 20,204,135, 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 | 20,204,135 | |
| -1 | -20,204,135 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,204,135.
Example:
1 x 20,204,135 = 20,204,135
and
-1 x -20,204,135 = 20,204,135
Notice both answers equal 20,204,135
With that explanation out of the way, let's continue. Next, we take the number 20,204,135 and divide it by 2:
20,204,135 ÷ 2 = 10,102,067.5
If the quotient is a whole number, then 2 and 10,102,067.5 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 | 20,204,135 | |
| -1 | -20,204,135 |
Now, we try dividing 20,204,135 by 3:
20,204,135 ÷ 3 = 6,734,711.6667
If the quotient is a whole number, then 3 and 6,734,711.6667 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 | 20,204,135 | |
| -1 | -20,204,135 |
Let's try dividing by 4:
20,204,135 ÷ 4 = 5,051,033.75
If the quotient is a whole number, then 4 and 5,051,033.75 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 | 20,204,135 | |
| -1 | 20,204,135 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 227 | 1,135 | 1,589 | 2,543 | 7,945 | 12,715 | 17,801 | 89,005 | 577,261 | 2,886,305 | 4,040,827 | 20,204,135 |
| -1 | -5 | -7 | -35 | -227 | -1,135 | -1,589 | -2,543 | -7,945 | -12,715 | -17,801 | -89,005 | -577,261 | -2,886,305 | -4,040,827 | -20,204,135 |
Here are some more numbers to try:
Try the factor calculator