A:
Positive:
1 x 2065555317 x 2950793313 x 1588888743 x 480361749 x 421541991 x 2269841301 x 686231559 x 369509637 x 3242632107 x 980333913 x 527877541 x 27391
Negative:
-1 x -206555531-7 x -29507933-13 x -15888887-43 x -4803617-49 x -4215419-91 x -2269841-301 x -686231-559 x -369509-637 x -324263-2107 x -98033-3913 x -52787-7541 x -27391
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 206,555,531, 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 | 206,555,531 | |
| -1 | -206,555,531 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 206,555,531.
Example:
1 x 206,555,531 = 206,555,531
and
-1 x -206,555,531 = 206,555,531
Notice both answers equal 206,555,531
With that explanation out of the way, let's continue. Next, we take the number 206,555,531 and divide it by 2:
206,555,531 ÷ 2 = 103,277,765.5
If the quotient is a whole number, then 2 and 103,277,765.5 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 | 206,555,531 | |
| -1 | -206,555,531 |
Now, we try dividing 206,555,531 by 3:
206,555,531 ÷ 3 = 68,851,843.6667
If the quotient is a whole number, then 3 and 68,851,843.6667 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 | 206,555,531 | |
| -1 | -206,555,531 |
Let's try dividing by 4:
206,555,531 ÷ 4 = 51,638,882.75
If the quotient is a whole number, then 4 and 51,638,882.75 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 | 206,555,531 | |
| -1 | 206,555,531 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 43 | 49 | 91 | 301 | 559 | 637 | 2,107 | 3,913 | 7,541 | 27,391 | 52,787 | 98,033 | 324,263 | 369,509 | 686,231 | 2,269,841 | 4,215,419 | 4,803,617 | 15,888,887 | 29,507,933 | 206,555,531 |
| -1 | -7 | -13 | -43 | -49 | -91 | -301 | -559 | -637 | -2,107 | -3,913 | -7,541 | -27,391 | -52,787 | -98,033 | -324,263 | -369,509 | -686,231 | -2,269,841 | -4,215,419 | -4,803,617 | -15,888,887 | -29,507,933 | -206,555,531 |
Here are some more numbers to try:
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