A:
Positive:
1 x 6605022055 x 13210044111 x 6004565555 x 1200913161 x 10827905305 x 2165581671 x 9843553355 x 196871
Negative:
-1 x -660502205-5 x -132100441-11 x -60045655-55 x -12009131-61 x -10827905-305 x -2165581-671 x -984355-3355 x -196871
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 660,502,205, 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 | 660,502,205 | |
| -1 | -660,502,205 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 660,502,205.
Example:
1 x 660,502,205 = 660,502,205
and
-1 x -660,502,205 = 660,502,205
Notice both answers equal 660,502,205
With that explanation out of the way, let's continue. Next, we take the number 660,502,205 and divide it by 2:
660,502,205 ÷ 2 = 330,251,102.5
If the quotient is a whole number, then 2 and 330,251,102.5 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 | 660,502,205 | |
| -1 | -660,502,205 |
Now, we try dividing 660,502,205 by 3:
660,502,205 ÷ 3 = 220,167,401.6667
If the quotient is a whole number, then 3 and 220,167,401.6667 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 | 660,502,205 | |
| -1 | -660,502,205 |
Let's try dividing by 4:
660,502,205 ÷ 4 = 165,125,551.25
If the quotient is a whole number, then 4 and 165,125,551.25 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 | 660,502,205 | |
| -1 | 660,502,205 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 61 | 305 | 671 | 3,355 | 196,871 | 984,355 | 2,165,581 | 10,827,905 | 12,009,131 | 60,045,655 | 132,100,441 | 660,502,205 |
| -1 | -5 | -11 | -55 | -61 | -305 | -671 | -3,355 | -196,871 | -984,355 | -2,165,581 | -10,827,905 | -12,009,131 | -60,045,655 | -132,100,441 | -660,502,205 |
Here are some more numbers to try:
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