A:
Positive:
1 x 1805140155 x 3610280311 x 1641036555 x 3282073181 x 997315905 x 1994631991 x 906659955 x 18133
Negative:
-1 x -180514015-5 x -36102803-11 x -16410365-55 x -3282073-181 x -997315-905 x -199463-1991 x -90665-9955 x -18133
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 180,514,015, 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 | 180,514,015 | |
| -1 | -180,514,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 180,514,015.
Example:
1 x 180,514,015 = 180,514,015
and
-1 x -180,514,015 = 180,514,015
Notice both answers equal 180,514,015
With that explanation out of the way, let's continue. Next, we take the number 180,514,015 and divide it by 2:
180,514,015 ÷ 2 = 90,257,007.5
If the quotient is a whole number, then 2 and 90,257,007.5 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 | 180,514,015 | |
| -1 | -180,514,015 |
Now, we try dividing 180,514,015 by 3:
180,514,015 ÷ 3 = 60,171,338.3333
If the quotient is a whole number, then 3 and 60,171,338.3333 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 | 180,514,015 | |
| -1 | -180,514,015 |
Let's try dividing by 4:
180,514,015 ÷ 4 = 45,128,503.75
If the quotient is a whole number, then 4 and 45,128,503.75 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 | 180,514,015 | |
| -1 | 180,514,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 181 | 905 | 1,991 | 9,955 | 18,133 | 90,665 | 199,463 | 997,315 | 3,282,073 | 16,410,365 | 36,102,803 | 180,514,015 |
| -1 | -5 | -11 | -55 | -181 | -905 | -1,991 | -9,955 | -18,133 | -90,665 | -199,463 | -997,315 | -3,282,073 | -16,410,365 | -36,102,803 | -180,514,015 |
Here are some more numbers to try:
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