A:
Positive:
1 x 16432066141 x 400782183 x 1979767109 x 1507529443 x 3709273403 x 482874469 x 367699047 x 18163
Negative:
-1 x -164320661-41 x -4007821-83 x -1979767-109 x -1507529-443 x -370927-3403 x -48287-4469 x -36769-9047 x -18163
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 164,320,661, 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 | 164,320,661 | |
| -1 | -164,320,661 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 164,320,661.
Example:
1 x 164,320,661 = 164,320,661
and
-1 x -164,320,661 = 164,320,661
Notice both answers equal 164,320,661
With that explanation out of the way, let's continue. Next, we take the number 164,320,661 and divide it by 2:
164,320,661 ÷ 2 = 82,160,330.5
If the quotient is a whole number, then 2 and 82,160,330.5 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 | 164,320,661 | |
| -1 | -164,320,661 |
Now, we try dividing 164,320,661 by 3:
164,320,661 ÷ 3 = 54,773,553.6667
If the quotient is a whole number, then 3 and 54,773,553.6667 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 | 164,320,661 | |
| -1 | -164,320,661 |
Let's try dividing by 4:
164,320,661 ÷ 4 = 41,080,165.25
If the quotient is a whole number, then 4 and 41,080,165.25 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 | 164,320,661 | |
| -1 | 164,320,661 |
If you did it right, you will end up with this table:
| 1 | 41 | 83 | 109 | 443 | 3,403 | 4,469 | 9,047 | 18,163 | 36,769 | 48,287 | 370,927 | 1,507,529 | 1,979,767 | 4,007,821 | 164,320,661 |
| -1 | -41 | -83 | -109 | -443 | -3,403 | -4,469 | -9,047 | -18,163 | -36,769 | -48,287 | -370,927 | -1,507,529 | -1,979,767 | -4,007,821 | -164,320,661 |
Here are some more numbers to try:
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