A:
Positive:
1 x 31204555 x 62409113 x 24003561 x 5115565 x 48007305 x 10231787 x 3965793 x 3935
Negative:
-1 x -3120455-5 x -624091-13 x -240035-61 x -51155-65 x -48007-305 x -10231-787 x -3965-793 x -3935
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 3,120,455, 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 | 3,120,455 | |
| -1 | -3,120,455 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,120,455.
Example:
1 x 3,120,455 = 3,120,455
and
-1 x -3,120,455 = 3,120,455
Notice both answers equal 3,120,455
With that explanation out of the way, let's continue. Next, we take the number 3,120,455 and divide it by 2:
3,120,455 ÷ 2 = 1,560,227.5
If the quotient is a whole number, then 2 and 1,560,227.5 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 | 3,120,455 | |
| -1 | -3,120,455 |
Now, we try dividing 3,120,455 by 3:
3,120,455 ÷ 3 = 1,040,151.6667
If the quotient is a whole number, then 3 and 1,040,151.6667 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 | 3,120,455 | |
| -1 | -3,120,455 |
Let's try dividing by 4:
3,120,455 ÷ 4 = 780,113.75
If the quotient is a whole number, then 4 and 780,113.75 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 | 3,120,455 | |
| -1 | 3,120,455 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 61 | 65 | 305 | 787 | 793 | 3,935 | 3,965 | 10,231 | 48,007 | 51,155 | 240,035 | 624,091 | 3,120,455 |
| -1 | -5 | -13 | -61 | -65 | -305 | -787 | -793 | -3,935 | -3,965 | -10,231 | -48,007 | -51,155 | -240,035 | -624,091 | -3,120,455 |
Here are some more numbers to try:
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