A:
Positive:
1 x 2066211077 x 2951730111 x 1878373731 x 666519777 x 2683391217 x 952171341 x 6059272387 x 86561
Negative:
-1 x -206621107-7 x -29517301-11 x -18783737-31 x -6665197-77 x -2683391-217 x -952171-341 x -605927-2387 x -86561
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 206,621,107, 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 | 206,621,107 | |
| -1 | -206,621,107 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 206,621,107.
Example:
1 x 206,621,107 = 206,621,107
and
-1 x -206,621,107 = 206,621,107
Notice both answers equal 206,621,107
With that explanation out of the way, let's continue. Next, we take the number 206,621,107 and divide it by 2:
206,621,107 ÷ 2 = 103,310,553.5
If the quotient is a whole number, then 2 and 103,310,553.5 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 | 206,621,107 | |
| -1 | -206,621,107 |
Now, we try dividing 206,621,107 by 3:
206,621,107 ÷ 3 = 68,873,702.3333
If the quotient is a whole number, then 3 and 68,873,702.3333 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 | 206,621,107 | |
| -1 | -206,621,107 |
Let's try dividing by 4:
206,621,107 ÷ 4 = 51,655,276.75
If the quotient is a whole number, then 4 and 51,655,276.75 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 | 206,621,107 | |
| -1 | 206,621,107 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 31 | 77 | 217 | 341 | 2,387 | 86,561 | 605,927 | 952,171 | 2,683,391 | 6,665,197 | 18,783,737 | 29,517,301 | 206,621,107 |
| -1 | -7 | -11 | -31 | -77 | -217 | -341 | -2,387 | -86,561 | -605,927 | -952,171 | -2,683,391 | -6,665,197 | -18,783,737 | -29,517,301 | -206,621,107 |
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