A:
Positive:
1 x 6651201417 x 9501716323 x 28918267161 x 4131181863 x 7707074787 x 1389436041 x 11010119849 x 33509
Negative:
-1 x -665120141-7 x -95017163-23 x -28918267-161 x -4131181-863 x -770707-4787 x -138943-6041 x -110101-19849 x -33509
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 665,120,141, 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 | 665,120,141 | |
| -1 | -665,120,141 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 665,120,141.
Example:
1 x 665,120,141 = 665,120,141
and
-1 x -665,120,141 = 665,120,141
Notice both answers equal 665,120,141
With that explanation out of the way, let's continue. Next, we take the number 665,120,141 and divide it by 2:
665,120,141 ÷ 2 = 332,560,070.5
If the quotient is a whole number, then 2 and 332,560,070.5 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 | 665,120,141 | |
| -1 | -665,120,141 |
Now, we try dividing 665,120,141 by 3:
665,120,141 ÷ 3 = 221,706,713.6667
If the quotient is a whole number, then 3 and 221,706,713.6667 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 | 665,120,141 | |
| -1 | -665,120,141 |
Let's try dividing by 4:
665,120,141 ÷ 4 = 166,280,035.25
If the quotient is a whole number, then 4 and 166,280,035.25 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 | 665,120,141 | |
| -1 | 665,120,141 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 161 | 863 | 4,787 | 6,041 | 19,849 | 33,509 | 110,101 | 138,943 | 770,707 | 4,131,181 | 28,918,267 | 95,017,163 | 665,120,141 |
| -1 | -7 | -23 | -161 | -863 | -4,787 | -6,041 | -19,849 | -33,509 | -110,101 | -138,943 | -770,707 | -4,131,181 | -28,918,267 | -95,017,163 | -665,120,141 |
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