A:
Positive:
1 x 32023143113 x 2463318717 x 18837143221 x 1449011601 x 5328312411 x 1328217813 x 4098710217 x 31343
Negative:
-1 x -320231431-13 x -24633187-17 x -18837143-221 x -1449011-601 x -532831-2411 x -132821-7813 x -40987-10217 x -31343
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 320,231,431, 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 | 320,231,431 | |
| -1 | -320,231,431 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 320,231,431.
Example:
1 x 320,231,431 = 320,231,431
and
-1 x -320,231,431 = 320,231,431
Notice both answers equal 320,231,431
With that explanation out of the way, let's continue. Next, we take the number 320,231,431 and divide it by 2:
320,231,431 ÷ 2 = 160,115,715.5
If the quotient is a whole number, then 2 and 160,115,715.5 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 | 320,231,431 | |
| -1 | -320,231,431 |
Now, we try dividing 320,231,431 by 3:
320,231,431 ÷ 3 = 106,743,810.3333
If the quotient is a whole number, then 3 and 106,743,810.3333 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 | 320,231,431 | |
| -1 | -320,231,431 |
Let's try dividing by 4:
320,231,431 ÷ 4 = 80,057,857.75
If the quotient is a whole number, then 4 and 80,057,857.75 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 | 320,231,431 | |
| -1 | 320,231,431 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 221 | 601 | 2,411 | 7,813 | 10,217 | 31,343 | 40,987 | 132,821 | 532,831 | 1,449,011 | 18,837,143 | 24,633,187 | 320,231,431 |
| -1 | -13 | -17 | -221 | -601 | -2,411 | -7,813 | -10,217 | -31,343 | -40,987 | -132,821 | -532,831 | -1,449,011 | -18,837,143 | -24,633,187 | -320,231,431 |
Here are some more numbers to try:
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