A:
Positive:
1 x 39836055 x 79672137 x 10766561 x 65305185 x 21533305 x 13061353 x 112851765 x 2257
Negative:
-1 x -3983605-5 x -796721-37 x -107665-61 x -65305-185 x -21533-305 x -13061-353 x -11285-1765 x -2257
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 3,983,605, 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 | 3,983,605 | |
| -1 | -3,983,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,983,605.
Example:
1 x 3,983,605 = 3,983,605
and
-1 x -3,983,605 = 3,983,605
Notice both answers equal 3,983,605
With that explanation out of the way, let's continue. Next, we take the number 3,983,605 and divide it by 2:
3,983,605 ÷ 2 = 1,991,802.5
If the quotient is a whole number, then 2 and 1,991,802.5 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 | 3,983,605 | |
| -1 | -3,983,605 |
Now, we try dividing 3,983,605 by 3:
3,983,605 ÷ 3 = 1,327,868.3333
If the quotient is a whole number, then 3 and 1,327,868.3333 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 | 3,983,605 | |
| -1 | -3,983,605 |
Let's try dividing by 4:
3,983,605 ÷ 4 = 995,901.25
If the quotient is a whole number, then 4 and 995,901.25 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 | 3,983,605 | |
| -1 | 3,983,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 61 | 185 | 305 | 353 | 1,765 | 2,257 | 11,285 | 13,061 | 21,533 | 65,305 | 107,665 | 796,721 | 3,983,605 |
| -1 | -5 | -37 | -61 | -185 | -305 | -353 | -1,765 | -2,257 | -11,285 | -13,061 | -21,533 | -65,305 | -107,665 | -796,721 | -3,983,605 |
Here are some more numbers to try:
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