A:
Positive:
1 x 16551266317 x 973603979 x 2095097251 x 659413491 x 3370931343 x 1232414267 x 387898347 x 19829
Negative:
-1 x -165512663-17 x -9736039-79 x -2095097-251 x -659413-491 x -337093-1343 x -123241-4267 x -38789-8347 x -19829
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 165,512,663, 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 | 165,512,663 | |
| -1 | -165,512,663 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 165,512,663.
Example:
1 x 165,512,663 = 165,512,663
and
-1 x -165,512,663 = 165,512,663
Notice both answers equal 165,512,663
With that explanation out of the way, let's continue. Next, we take the number 165,512,663 and divide it by 2:
165,512,663 ÷ 2 = 82,756,331.5
If the quotient is a whole number, then 2 and 82,756,331.5 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 | 165,512,663 | |
| -1 | -165,512,663 |
Now, we try dividing 165,512,663 by 3:
165,512,663 ÷ 3 = 55,170,887.6667
If the quotient is a whole number, then 3 and 55,170,887.6667 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 | 165,512,663 | |
| -1 | -165,512,663 |
Let's try dividing by 4:
165,512,663 ÷ 4 = 41,378,165.75
If the quotient is a whole number, then 4 and 41,378,165.75 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 | 165,512,663 | |
| -1 | 165,512,663 |
If you did it right, you will end up with this table:
| 1 | 17 | 79 | 251 | 491 | 1,343 | 4,267 | 8,347 | 19,829 | 38,789 | 123,241 | 337,093 | 659,413 | 2,095,097 | 9,736,039 | 165,512,663 |
| -1 | -17 | -79 | -251 | -491 | -1,343 | -4,267 | -8,347 | -19,829 | -38,789 | -123,241 | -337,093 | -659,413 | -2,095,097 | -9,736,039 | -165,512,663 |
Here are some more numbers to try:
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