A:
Positive:
1 x 3212153355 x 642430677 x 4588790531 x 1036178535 x 917758149 x 6555415155 x 2072357217 x 1480255245 x 13110831085 x 2960511519 x 2114657595 x 42293
Negative:
-1 x -321215335-5 x -64243067-7 x -45887905-31 x -10361785-35 x -9177581-49 x -6555415-155 x -2072357-217 x -1480255-245 x -1311083-1085 x -296051-1519 x -211465-7595 x -42293
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 321,215,335, 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 | 321,215,335 | |
| -1 | -321,215,335 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 321,215,335.
Example:
1 x 321,215,335 = 321,215,335
and
-1 x -321,215,335 = 321,215,335
Notice both answers equal 321,215,335
With that explanation out of the way, let's continue. Next, we take the number 321,215,335 and divide it by 2:
321,215,335 ÷ 2 = 160,607,667.5
If the quotient is a whole number, then 2 and 160,607,667.5 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 | 321,215,335 | |
| -1 | -321,215,335 |
Now, we try dividing 321,215,335 by 3:
321,215,335 ÷ 3 = 107,071,778.3333
If the quotient is a whole number, then 3 and 107,071,778.3333 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 | 321,215,335 | |
| -1 | -321,215,335 |
Let's try dividing by 4:
321,215,335 ÷ 4 = 80,303,833.75
If the quotient is a whole number, then 4 and 80,303,833.75 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 | 321,215,335 | |
| -1 | 321,215,335 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 31 | 35 | 49 | 155 | 217 | 245 | 1,085 | 1,519 | 7,595 | 42,293 | 211,465 | 296,051 | 1,311,083 | 1,480,255 | 2,072,357 | 6,555,415 | 9,177,581 | 10,361,785 | 45,887,905 | 64,243,067 | 321,215,335 |
| -1 | -5 | -7 | -31 | -35 | -49 | -155 | -217 | -245 | -1,085 | -1,519 | -7,595 | -42,293 | -211,465 | -296,051 | -1,311,083 | -1,480,255 | -2,072,357 | -6,555,415 | -9,177,581 | -10,361,785 | -45,887,905 | -64,243,067 | -321,215,335 |
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