A:
Positive:
1 x 3310222155 x 6620444317 x 1947189585 x 3894379281 x 11780151405 x 2356034777 x 6929513859 x 23885
Negative:
-1 x -331022215-5 x -66204443-17 x -19471895-85 x -3894379-281 x -1178015-1405 x -235603-4777 x -69295-13859 x -23885
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 331,022,215, 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 | 331,022,215 | |
| -1 | -331,022,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 331,022,215.
Example:
1 x 331,022,215 = 331,022,215
and
-1 x -331,022,215 = 331,022,215
Notice both answers equal 331,022,215
With that explanation out of the way, let's continue. Next, we take the number 331,022,215 and divide it by 2:
331,022,215 ÷ 2 = 165,511,107.5
If the quotient is a whole number, then 2 and 165,511,107.5 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 | 331,022,215 | |
| -1 | -331,022,215 |
Now, we try dividing 331,022,215 by 3:
331,022,215 ÷ 3 = 110,340,738.3333
If the quotient is a whole number, then 3 and 110,340,738.3333 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 | 331,022,215 | |
| -1 | -331,022,215 |
Let's try dividing by 4:
331,022,215 ÷ 4 = 82,755,553.75
If the quotient is a whole number, then 4 and 82,755,553.75 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 | 331,022,215 | |
| -1 | 331,022,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 281 | 1,405 | 4,777 | 13,859 | 23,885 | 69,295 | 235,603 | 1,178,015 | 3,894,379 | 19,471,895 | 66,204,443 | 331,022,215 |
| -1 | -5 | -17 | -85 | -281 | -1,405 | -4,777 | -13,859 | -23,885 | -69,295 | -235,603 | -1,178,015 | -3,894,379 | -19,471,895 | -66,204,443 | -331,022,215 |
Here are some more numbers to try:
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