A:
Positive:
1 x 3213133455 x 6426266917 x 1890078585 x 37801571789 x 1796052113 x 1520658945 x 3592110565 x 30413
Negative:
-1 x -321313345-5 x -64262669-17 x -18900785-85 x -3780157-1789 x -179605-2113 x -152065-8945 x -35921-10565 x -30413
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 321,313,345, 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 | 321,313,345 | |
| -1 | -321,313,345 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 321,313,345.
Example:
1 x 321,313,345 = 321,313,345
and
-1 x -321,313,345 = 321,313,345
Notice both answers equal 321,313,345
With that explanation out of the way, let's continue. Next, we take the number 321,313,345 and divide it by 2:
321,313,345 ÷ 2 = 160,656,672.5
If the quotient is a whole number, then 2 and 160,656,672.5 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 | 321,313,345 | |
| -1 | -321,313,345 |
Now, we try dividing 321,313,345 by 3:
321,313,345 ÷ 3 = 107,104,448.3333
If the quotient is a whole number, then 3 and 107,104,448.3333 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 | 321,313,345 | |
| -1 | -321,313,345 |
Let's try dividing by 4:
321,313,345 ÷ 4 = 80,328,336.25
If the quotient is a whole number, then 4 and 80,328,336.25 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 | 321,313,345 | |
| -1 | 321,313,345 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 1,789 | 2,113 | 8,945 | 10,565 | 30,413 | 35,921 | 152,065 | 179,605 | 3,780,157 | 18,900,785 | 64,262,669 | 321,313,345 |
| -1 | -5 | -17 | -85 | -1,789 | -2,113 | -8,945 | -10,565 | -30,413 | -35,921 | -152,065 | -179,605 | -3,780,157 | -18,900,785 | -64,262,669 | -321,313,345 |
Here are some more numbers to try:
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