A:
Positive:
1 x 32132120911 x 2921101937 x 8684357109 x 2947901407 x 7894871199 x 2679914033 x 796737243 x 44363
Negative:
-1 x -321321209-11 x -29211019-37 x -8684357-109 x -2947901-407 x -789487-1199 x -267991-4033 x -79673-7243 x -44363
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 321,321,209, 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 | 321,321,209 | |
| -1 | -321,321,209 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 321,321,209.
Example:
1 x 321,321,209 = 321,321,209
and
-1 x -321,321,209 = 321,321,209
Notice both answers equal 321,321,209
With that explanation out of the way, let's continue. Next, we take the number 321,321,209 and divide it by 2:
321,321,209 ÷ 2 = 160,660,604.5
If the quotient is a whole number, then 2 and 160,660,604.5 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 | 321,321,209 | |
| -1 | -321,321,209 |
Now, we try dividing 321,321,209 by 3:
321,321,209 ÷ 3 = 107,107,069.6667
If the quotient is a whole number, then 3 and 107,107,069.6667 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 | 321,321,209 | |
| -1 | -321,321,209 |
Let's try dividing by 4:
321,321,209 ÷ 4 = 80,330,302.25
If the quotient is a whole number, then 4 and 80,330,302.25 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 | 321,321,209 | |
| -1 | 321,321,209 |
If you did it right, you will end up with this table:
| 1 | 11 | 37 | 109 | 407 | 1,199 | 4,033 | 7,243 | 44,363 | 79,673 | 267,991 | 789,487 | 2,947,901 | 8,684,357 | 29,211,019 | 321,321,209 |
| -1 | -11 | -37 | -109 | -407 | -1,199 | -4,033 | -7,243 | -44,363 | -79,673 | -267,991 | -789,487 | -2,947,901 | -8,684,357 | -29,211,019 | -321,321,209 |
Here are some more numbers to try:
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