A:
Positive:
1 x 3201311055 x 640262217 x 4573301535 x 9146603739 x 4331953695 x 866395173 x 6188512377 x 25865
Negative:
-1 x -320131105-5 x -64026221-7 x -45733015-35 x -9146603-739 x -433195-3695 x -86639-5173 x -61885-12377 x -25865
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 320,131,105, 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 | 320,131,105 | |
| -1 | -320,131,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 320,131,105.
Example:
1 x 320,131,105 = 320,131,105
and
-1 x -320,131,105 = 320,131,105
Notice both answers equal 320,131,105
With that explanation out of the way, let's continue. Next, we take the number 320,131,105 and divide it by 2:
320,131,105 ÷ 2 = 160,065,552.5
If the quotient is a whole number, then 2 and 160,065,552.5 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 | 320,131,105 | |
| -1 | -320,131,105 |
Now, we try dividing 320,131,105 by 3:
320,131,105 ÷ 3 = 106,710,368.3333
If the quotient is a whole number, then 3 and 106,710,368.3333 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 | 320,131,105 | |
| -1 | -320,131,105 |
Let's try dividing by 4:
320,131,105 ÷ 4 = 80,032,776.25
If the quotient is a whole number, then 4 and 80,032,776.25 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 | 320,131,105 | |
| -1 | 320,131,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 739 | 3,695 | 5,173 | 12,377 | 25,865 | 61,885 | 86,639 | 433,195 | 9,146,603 | 45,733,015 | 64,026,221 | 320,131,105 |
| -1 | -5 | -7 | -35 | -739 | -3,695 | -5,173 | -12,377 | -25,865 | -61,885 | -86,639 | -433,195 | -9,146,603 | -45,733,015 | -64,026,221 | -320,131,105 |
Here are some more numbers to try:
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