A:
Positive:
1 x 280658355 x 56131677 x 400940535 x 801881727 x 386051103 x 254453635 x 77215089 x 5515
Negative:
-1 x -28065835-5 x -5613167-7 x -4009405-35 x -801881-727 x -38605-1103 x -25445-3635 x -7721-5089 x -5515
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 28,065,835, 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 | 28,065,835 | |
| -1 | -28,065,835 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,065,835.
Example:
1 x 28,065,835 = 28,065,835
and
-1 x -28,065,835 = 28,065,835
Notice both answers equal 28,065,835
With that explanation out of the way, let's continue. Next, we take the number 28,065,835 and divide it by 2:
28,065,835 ÷ 2 = 14,032,917.5
If the quotient is a whole number, then 2 and 14,032,917.5 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 | 28,065,835 | |
| -1 | -28,065,835 |
Now, we try dividing 28,065,835 by 3:
28,065,835 ÷ 3 = 9,355,278.3333
If the quotient is a whole number, then 3 and 9,355,278.3333 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 | 28,065,835 | |
| -1 | -28,065,835 |
Let's try dividing by 4:
28,065,835 ÷ 4 = 7,016,458.75
If the quotient is a whole number, then 4 and 7,016,458.75 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 | 28,065,835 | |
| -1 | 28,065,835 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 727 | 1,103 | 3,635 | 5,089 | 5,515 | 7,721 | 25,445 | 38,605 | 801,881 | 4,009,405 | 5,613,167 | 28,065,835 |
| -1 | -5 | -7 | -35 | -727 | -1,103 | -3,635 | -5,089 | -5,515 | -7,721 | -25,445 | -38,605 | -801,881 | -4,009,405 | -5,613,167 | -28,065,835 |
Here are some more numbers to try:
Try the factor calculator