A:
Positive:
1 x 20651016111 x 1877365113 x 15885397143 x 1444127619 x 3336192333 x 885176809 x 303298047 x 25663
Negative:
-1 x -206510161-11 x -18773651-13 x -15885397-143 x -1444127-619 x -333619-2333 x -88517-6809 x -30329-8047 x -25663
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 206,510,161, 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 | 206,510,161 | |
| -1 | -206,510,161 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 206,510,161.
Example:
1 x 206,510,161 = 206,510,161
and
-1 x -206,510,161 = 206,510,161
Notice both answers equal 206,510,161
With that explanation out of the way, let's continue. Next, we take the number 206,510,161 and divide it by 2:
206,510,161 ÷ 2 = 103,255,080.5
If the quotient is a whole number, then 2 and 103,255,080.5 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 | 206,510,161 | |
| -1 | -206,510,161 |
Now, we try dividing 206,510,161 by 3:
206,510,161 ÷ 3 = 68,836,720.3333
If the quotient is a whole number, then 3 and 68,836,720.3333 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 | 206,510,161 | |
| -1 | -206,510,161 |
Let's try dividing by 4:
206,510,161 ÷ 4 = 51,627,540.25
If the quotient is a whole number, then 4 and 51,627,540.25 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 | 206,510,161 | |
| -1 | 206,510,161 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 619 | 2,333 | 6,809 | 8,047 | 25,663 | 30,329 | 88,517 | 333,619 | 1,444,127 | 15,885,397 | 18,773,651 | 206,510,161 |
| -1 | -11 | -13 | -143 | -619 | -2,333 | -6,809 | -8,047 | -25,663 | -30,329 | -88,517 | -333,619 | -1,444,127 | -15,885,397 | -18,773,651 | -206,510,161 |
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