A:
Positive:
1 x 38781055 x 7756217 x 55401511 x 35255535 x 11080349 x 7914555 x 7051177 x 50365245 x 15829385 x 10073539 x 71951439 x 2695
Negative:
-1 x -3878105-5 x -775621-7 x -554015-11 x -352555-35 x -110803-49 x -79145-55 x -70511-77 x -50365-245 x -15829-385 x -10073-539 x -7195-1439 x -2695
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 3,878,105, 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 | 3,878,105 | |
| -1 | -3,878,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,878,105.
Example:
1 x 3,878,105 = 3,878,105
and
-1 x -3,878,105 = 3,878,105
Notice both answers equal 3,878,105
With that explanation out of the way, let's continue. Next, we take the number 3,878,105 and divide it by 2:
3,878,105 ÷ 2 = 1,939,052.5
If the quotient is a whole number, then 2 and 1,939,052.5 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 | 3,878,105 | |
| -1 | -3,878,105 |
Now, we try dividing 3,878,105 by 3:
3,878,105 ÷ 3 = 1,292,701.6667
If the quotient is a whole number, then 3 and 1,292,701.6667 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 | 3,878,105 | |
| -1 | -3,878,105 |
Let's try dividing by 4:
3,878,105 ÷ 4 = 969,526.25
If the quotient is a whole number, then 4 and 969,526.25 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 | 3,878,105 | |
| -1 | 3,878,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 49 | 55 | 77 | 245 | 385 | 539 | 1,439 | 2,695 | 7,195 | 10,073 | 15,829 | 50,365 | 70,511 | 79,145 | 110,803 | 352,555 | 554,015 | 775,621 | 3,878,105 |
| -1 | -5 | -7 | -11 | -35 | -49 | -55 | -77 | -245 | -385 | -539 | -1,439 | -2,695 | -7,195 | -10,073 | -15,829 | -50,365 | -70,511 | -79,145 | -110,803 | -352,555 | -554,015 | -775,621 | -3,878,105 |
Here are some more numbers to try:
Try the factor calculator