A:
Positive:
1 x 80906655 x 161813311 x 73551543 x 18815555 x 147103121 x 66865215 x 37631311 x 26015473 x 17105605 x 133731555 x 52032365 x 3421
Negative:
-1 x -8090665-5 x -1618133-11 x -735515-43 x -188155-55 x -147103-121 x -66865-215 x -37631-311 x -26015-473 x -17105-605 x -13373-1555 x -5203-2365 x -3421
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 8,090,665, 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 | 8,090,665 | |
| -1 | -8,090,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 8,090,665.
Example:
1 x 8,090,665 = 8,090,665
and
-1 x -8,090,665 = 8,090,665
Notice both answers equal 8,090,665
With that explanation out of the way, let's continue. Next, we take the number 8,090,665 and divide it by 2:
8,090,665 ÷ 2 = 4,045,332.5
If the quotient is a whole number, then 2 and 4,045,332.5 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 | 8,090,665 | |
| -1 | -8,090,665 |
Now, we try dividing 8,090,665 by 3:
8,090,665 ÷ 3 = 2,696,888.3333
If the quotient is a whole number, then 3 and 2,696,888.3333 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 | 8,090,665 | |
| -1 | -8,090,665 |
Let's try dividing by 4:
8,090,665 ÷ 4 = 2,022,666.25
If the quotient is a whole number, then 4 and 2,022,666.25 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 | 8,090,665 | |
| -1 | 8,090,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 43 | 55 | 121 | 215 | 311 | 473 | 605 | 1,555 | 2,365 | 3,421 | 5,203 | 13,373 | 17,105 | 26,015 | 37,631 | 66,865 | 147,103 | 188,155 | 735,515 | 1,618,133 | 8,090,665 |
| -1 | -5 | -11 | -43 | -55 | -121 | -215 | -311 | -473 | -605 | -1,555 | -2,365 | -3,421 | -5,203 | -13,373 | -17,105 | -26,015 | -37,631 | -66,865 | -147,103 | -188,155 | -735,515 | -1,618,133 | -8,090,665 |
Here are some more numbers to try:
Try the factor calculator