A:
Positive:
1 x 1636480555 x 3272961161 x 2682755305 x 536551331 x 4944051621 x 1009551655 x 988818105 x 20191
Negative:
-1 x -163648055-5 x -32729611-61 x -2682755-305 x -536551-331 x -494405-1621 x -100955-1655 x -98881-8105 x -20191
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 163,648,055, 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 | 163,648,055 | |
| -1 | -163,648,055 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 163,648,055.
Example:
1 x 163,648,055 = 163,648,055
and
-1 x -163,648,055 = 163,648,055
Notice both answers equal 163,648,055
With that explanation out of the way, let's continue. Next, we take the number 163,648,055 and divide it by 2:
163,648,055 ÷ 2 = 81,824,027.5
If the quotient is a whole number, then 2 and 81,824,027.5 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 | 163,648,055 | |
| -1 | -163,648,055 |
Now, we try dividing 163,648,055 by 3:
163,648,055 ÷ 3 = 54,549,351.6667
If the quotient is a whole number, then 3 and 54,549,351.6667 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 | 163,648,055 | |
| -1 | -163,648,055 |
Let's try dividing by 4:
163,648,055 ÷ 4 = 40,912,013.75
If the quotient is a whole number, then 4 and 40,912,013.75 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 | 163,648,055 | |
| -1 | 163,648,055 |
If you did it right, you will end up with this table:
| 1 | 5 | 61 | 305 | 331 | 1,621 | 1,655 | 8,105 | 20,191 | 98,881 | 100,955 | 494,405 | 536,551 | 2,682,755 | 32,729,611 | 163,648,055 |
| -1 | -5 | -61 | -305 | -331 | -1,621 | -1,655 | -8,105 | -20,191 | -98,881 | -100,955 | -494,405 | -536,551 | -2,682,755 | -32,729,611 | -163,648,055 |
Here are some more numbers to try:
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