A:
Positive:
1 x 3310203055 x 662040617 x 4728861511 x 3009275535 x 945772355 x 601855177 x 4298965121 x 2735705385 x 859793605 x 547141847 x 3908154235 x 78163
Negative:
-1 x -331020305-5 x -66204061-7 x -47288615-11 x -30092755-35 x -9457723-55 x -6018551-77 x -4298965-121 x -2735705-385 x -859793-605 x -547141-847 x -390815-4235 x -78163
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 331,020,305, 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 | 331,020,305 | |
| -1 | -331,020,305 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 331,020,305.
Example:
1 x 331,020,305 = 331,020,305
and
-1 x -331,020,305 = 331,020,305
Notice both answers equal 331,020,305
With that explanation out of the way, let's continue. Next, we take the number 331,020,305 and divide it by 2:
331,020,305 ÷ 2 = 165,510,152.5
If the quotient is a whole number, then 2 and 165,510,152.5 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 | 331,020,305 | |
| -1 | -331,020,305 |
Now, we try dividing 331,020,305 by 3:
331,020,305 ÷ 3 = 110,340,101.6667
If the quotient is a whole number, then 3 and 110,340,101.6667 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 | 331,020,305 | |
| -1 | -331,020,305 |
Let's try dividing by 4:
331,020,305 ÷ 4 = 82,755,076.25
If the quotient is a whole number, then 4 and 82,755,076.25 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 | 331,020,305 | |
| -1 | 331,020,305 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 121 | 385 | 605 | 847 | 4,235 | 78,163 | 390,815 | 547,141 | 859,793 | 2,735,705 | 4,298,965 | 6,018,551 | 9,457,723 | 30,092,755 | 47,288,615 | 66,204,061 | 331,020,305 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -121 | -385 | -605 | -847 | -4,235 | -78,163 | -390,815 | -547,141 | -859,793 | -2,735,705 | -4,298,965 | -6,018,551 | -9,457,723 | -30,092,755 | -47,288,615 | -66,204,061 | -331,020,305 |
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