A:
Positive:
1 x 2050131255 x 4100262525 x 8200525125 x 1640105331 x 619375625 x 328021991 x 2068751655 x 1238754955 x 413758275 x 24775
Negative:
-1 x -205013125-5 x -41002625-25 x -8200525-125 x -1640105-331 x -619375-625 x -328021-991 x -206875-1655 x -123875-4955 x -41375-8275 x -24775
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 205,013,125, 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 | 205,013,125 | |
| -1 | -205,013,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 205,013,125.
Example:
1 x 205,013,125 = 205,013,125
and
-1 x -205,013,125 = 205,013,125
Notice both answers equal 205,013,125
With that explanation out of the way, let's continue. Next, we take the number 205,013,125 and divide it by 2:
205,013,125 ÷ 2 = 102,506,562.5
If the quotient is a whole number, then 2 and 102,506,562.5 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 | 205,013,125 | |
| -1 | -205,013,125 |
Now, we try dividing 205,013,125 by 3:
205,013,125 ÷ 3 = 68,337,708.3333
If the quotient is a whole number, then 3 and 68,337,708.3333 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 | 205,013,125 | |
| -1 | -205,013,125 |
Let's try dividing by 4:
205,013,125 ÷ 4 = 51,253,281.25
If the quotient is a whole number, then 4 and 51,253,281.25 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 | 205,013,125 | |
| -1 | 205,013,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 125 | 331 | 625 | 991 | 1,655 | 4,955 | 8,275 | 24,775 | 41,375 | 123,875 | 206,875 | 328,021 | 619,375 | 1,640,105 | 8,200,525 | 41,002,625 | 205,013,125 |
| -1 | -5 | -25 | -125 | -331 | -625 | -991 | -1,655 | -4,955 | -8,275 | -24,775 | -41,375 | -123,875 | -206,875 | -328,021 | -619,375 | -1,640,105 | -8,200,525 | -41,002,625 | -205,013,125 |
Here are some more numbers to try:
Try the factor calculator