A:
Positive:
1 x 3312400217 x 4732000337 x 8952433259 x 1278919353 x 9383572471 x 1340513623 x 9142713061 x 25361
Negative:
-1 x -331240021-7 x -47320003-37 x -8952433-259 x -1278919-353 x -938357-2471 x -134051-3623 x -91427-13061 x -25361
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 331,240,021, 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 | 331,240,021 | |
| -1 | -331,240,021 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 331,240,021.
Example:
1 x 331,240,021 = 331,240,021
and
-1 x -331,240,021 = 331,240,021
Notice both answers equal 331,240,021
With that explanation out of the way, let's continue. Next, we take the number 331,240,021 and divide it by 2:
331,240,021 ÷ 2 = 165,620,010.5
If the quotient is a whole number, then 2 and 165,620,010.5 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 | 331,240,021 | |
| -1 | -331,240,021 |
Now, we try dividing 331,240,021 by 3:
331,240,021 ÷ 3 = 110,413,340.3333
If the quotient is a whole number, then 3 and 110,413,340.3333 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 | 331,240,021 | |
| -1 | -331,240,021 |
Let's try dividing by 4:
331,240,021 ÷ 4 = 82,810,005.25
If the quotient is a whole number, then 4 and 82,810,005.25 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 | 331,240,021 | |
| -1 | 331,240,021 |
If you did it right, you will end up with this table:
| 1 | 7 | 37 | 259 | 353 | 2,471 | 3,623 | 13,061 | 25,361 | 91,427 | 134,051 | 938,357 | 1,278,919 | 8,952,433 | 47,320,003 | 331,240,021 |
| -1 | -7 | -37 | -259 | -353 | -2,471 | -3,623 | -13,061 | -25,361 | -91,427 | -134,051 | -938,357 | -1,278,919 | -8,952,433 | -47,320,003 | -331,240,021 |
Here are some more numbers to try:
Try the factor calculator