A:
Positive:
1 x 1832080913 x 140929337 x 49515741 x 446849481 x 38089533 x 34373929 x 197211517 x 12077
Negative:
-1 x -18320809-13 x -1409293-37 x -495157-41 x -446849-481 x -38089-533 x -34373-929 x -19721-1517 x -12077
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 18,320,809, 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 | 18,320,809 | |
| -1 | -18,320,809 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,320,809.
Example:
1 x 18,320,809 = 18,320,809
and
-1 x -18,320,809 = 18,320,809
Notice both answers equal 18,320,809
With that explanation out of the way, let's continue. Next, we take the number 18,320,809 and divide it by 2:
18,320,809 ÷ 2 = 9,160,404.5
If the quotient is a whole number, then 2 and 9,160,404.5 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 | 18,320,809 | |
| -1 | -18,320,809 |
Now, we try dividing 18,320,809 by 3:
18,320,809 ÷ 3 = 6,106,936.3333
If the quotient is a whole number, then 3 and 6,106,936.3333 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 | 18,320,809 | |
| -1 | -18,320,809 |
Let's try dividing by 4:
18,320,809 ÷ 4 = 4,580,202.25
If the quotient is a whole number, then 4 and 4,580,202.25 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 | 18,320,809 | |
| -1 | 18,320,809 |
If you did it right, you will end up with this table:
| 1 | 13 | 37 | 41 | 481 | 533 | 929 | 1,517 | 12,077 | 19,721 | 34,373 | 38,089 | 446,849 | 495,157 | 1,409,293 | 18,320,809 |
| -1 | -13 | -37 | -41 | -481 | -533 | -929 | -1,517 | -12,077 | -19,721 | -34,373 | -38,089 | -446,849 | -495,157 | -1,409,293 | -18,320,809 |
Here are some more numbers to try:
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