A:
Positive:
1 x 38402217 x 54860311 x 34911153 x 7245777 x 49873371 x 10351583 x 6587941 x 4081
Negative:
-1 x -3840221-7 x -548603-11 x -349111-53 x -72457-77 x -49873-371 x -10351-583 x -6587-941 x -4081
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 3,840,221, 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 | 3,840,221 | |
| -1 | -3,840,221 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,840,221.
Example:
1 x 3,840,221 = 3,840,221
and
-1 x -3,840,221 = 3,840,221
Notice both answers equal 3,840,221
With that explanation out of the way, let's continue. Next, we take the number 3,840,221 and divide it by 2:
3,840,221 ÷ 2 = 1,920,110.5
If the quotient is a whole number, then 2 and 1,920,110.5 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 | 3,840,221 | |
| -1 | -3,840,221 |
Now, we try dividing 3,840,221 by 3:
3,840,221 ÷ 3 = 1,280,073.6667
If the quotient is a whole number, then 3 and 1,280,073.6667 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 | 3,840,221 | |
| -1 | -3,840,221 |
Let's try dividing by 4:
3,840,221 ÷ 4 = 960,055.25
If the quotient is a whole number, then 4 and 960,055.25 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 | 3,840,221 | |
| -1 | 3,840,221 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 53 | 77 | 371 | 583 | 941 | 4,081 | 6,587 | 10,351 | 49,873 | 72,457 | 349,111 | 548,603 | 3,840,221 |
| -1 | -7 | -11 | -53 | -77 | -371 | -583 | -941 | -4,081 | -6,587 | -10,351 | -49,873 | -72,457 | -349,111 | -548,603 | -3,840,221 |
Here are some more numbers to try:
Try the factor calculator