A:
Positive:
1 x 1656326455 x 33126529157 x 1054985257 x 644485785 x 210997821 x 2017451285 x 1288974105 x 40349
Negative:
-1 x -165632645-5 x -33126529-157 x -1054985-257 x -644485-785 x -210997-821 x -201745-1285 x -128897-4105 x -40349
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 165,632,645, 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 | 165,632,645 | |
| -1 | -165,632,645 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 165,632,645.
Example:
1 x 165,632,645 = 165,632,645
and
-1 x -165,632,645 = 165,632,645
Notice both answers equal 165,632,645
With that explanation out of the way, let's continue. Next, we take the number 165,632,645 and divide it by 2:
165,632,645 ÷ 2 = 82,816,322.5
If the quotient is a whole number, then 2 and 82,816,322.5 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 | 165,632,645 | |
| -1 | -165,632,645 |
Now, we try dividing 165,632,645 by 3:
165,632,645 ÷ 3 = 55,210,881.6667
If the quotient is a whole number, then 3 and 55,210,881.6667 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 | 165,632,645 | |
| -1 | -165,632,645 |
Let's try dividing by 4:
165,632,645 ÷ 4 = 41,408,161.25
If the quotient is a whole number, then 4 and 41,408,161.25 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 | 165,632,645 | |
| -1 | 165,632,645 |
If you did it right, you will end up with this table:
| 1 | 5 | 157 | 257 | 785 | 821 | 1,285 | 4,105 | 40,349 | 128,897 | 201,745 | 210,997 | 644,485 | 1,054,985 | 33,126,529 | 165,632,645 |
| -1 | -5 | -157 | -257 | -785 | -821 | -1,285 | -4,105 | -40,349 | -128,897 | -201,745 | -210,997 | -644,485 | -1,054,985 | -33,126,529 | -165,632,645 |
Here are some more numbers to try:
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