A:
Positive:
1 x 2041566555 x 4083133117 x 1200921585 x 240184389 x 2293895445 x 4587791513 x 1349357565 x 26987
Negative:
-1 x -204156655-5 x -40831331-17 x -12009215-85 x -2401843-89 x -2293895-445 x -458779-1513 x -134935-7565 x -26987
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 204,156,655, 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 | 204,156,655 | |
| -1 | -204,156,655 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 204,156,655.
Example:
1 x 204,156,655 = 204,156,655
and
-1 x -204,156,655 = 204,156,655
Notice both answers equal 204,156,655
With that explanation out of the way, let's continue. Next, we take the number 204,156,655 and divide it by 2:
204,156,655 ÷ 2 = 102,078,327.5
If the quotient is a whole number, then 2 and 102,078,327.5 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 | 204,156,655 | |
| -1 | -204,156,655 |
Now, we try dividing 204,156,655 by 3:
204,156,655 ÷ 3 = 68,052,218.3333
If the quotient is a whole number, then 3 and 68,052,218.3333 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 | 204,156,655 | |
| -1 | -204,156,655 |
Let's try dividing by 4:
204,156,655 ÷ 4 = 51,039,163.75
If the quotient is a whole number, then 4 and 51,039,163.75 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 | 204,156,655 | |
| -1 | 204,156,655 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 89 | 445 | 1,513 | 7,565 | 26,987 | 134,935 | 458,779 | 2,293,895 | 2,401,843 | 12,009,215 | 40,831,331 | 204,156,655 |
| -1 | -5 | -17 | -85 | -89 | -445 | -1,513 | -7,565 | -26,987 | -134,935 | -458,779 | -2,293,895 | -2,401,843 | -12,009,215 | -40,831,331 | -204,156,655 |
Here are some more numbers to try:
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