A:
Positive:
1 x 384793719 x 20252331 x 12412747 x 81871139 x 27683589 x 6533893 x 43091457 x 2641
Negative:
-1 x -3847937-19 x -202523-31 x -124127-47 x -81871-139 x -27683-589 x -6533-893 x -4309-1457 x -2641
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 3,847,937, 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 | 3,847,937 | |
| -1 | -3,847,937 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,847,937.
Example:
1 x 3,847,937 = 3,847,937
and
-1 x -3,847,937 = 3,847,937
Notice both answers equal 3,847,937
With that explanation out of the way, let's continue. Next, we take the number 3,847,937 and divide it by 2:
3,847,937 ÷ 2 = 1,923,968.5
If the quotient is a whole number, then 2 and 1,923,968.5 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 | 3,847,937 | |
| -1 | -3,847,937 |
Now, we try dividing 3,847,937 by 3:
3,847,937 ÷ 3 = 1,282,645.6667
If the quotient is a whole number, then 3 and 1,282,645.6667 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 | 3,847,937 | |
| -1 | -3,847,937 |
Let's try dividing by 4:
3,847,937 ÷ 4 = 961,984.25
If the quotient is a whole number, then 4 and 961,984.25 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 | 3,847,937 | |
| -1 | 3,847,937 |
If you did it right, you will end up with this table:
| 1 | 19 | 31 | 47 | 139 | 589 | 893 | 1,457 | 2,641 | 4,309 | 6,533 | 27,683 | 81,871 | 124,127 | 202,523 | 3,847,937 |
| -1 | -19 | -31 | -47 | -139 | -589 | -893 | -1,457 | -2,641 | -4,309 | -6,533 | -27,683 | -81,871 | -124,127 | -202,523 | -3,847,937 |
Here are some more numbers to try:
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