A:
Positive:
1 x 1651066555 x 330213317 x 2358666535 x 471733373 x 2261735365 x 452347511 x 3231052555 x 64621
Negative:
-1 x -165106655-5 x -33021331-7 x -23586665-35 x -4717333-73 x -2261735-365 x -452347-511 x -323105-2555 x -64621
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 165,106,655, 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 | 165,106,655 | |
| -1 | -165,106,655 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 165,106,655.
Example:
1 x 165,106,655 = 165,106,655
and
-1 x -165,106,655 = 165,106,655
Notice both answers equal 165,106,655
With that explanation out of the way, let's continue. Next, we take the number 165,106,655 and divide it by 2:
165,106,655 ÷ 2 = 82,553,327.5
If the quotient is a whole number, then 2 and 82,553,327.5 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 | 165,106,655 | |
| -1 | -165,106,655 |
Now, we try dividing 165,106,655 by 3:
165,106,655 ÷ 3 = 55,035,551.6667
If the quotient is a whole number, then 3 and 55,035,551.6667 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 | 165,106,655 | |
| -1 | -165,106,655 |
Let's try dividing by 4:
165,106,655 ÷ 4 = 41,276,663.75
If the quotient is a whole number, then 4 and 41,276,663.75 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 | 165,106,655 | |
| -1 | 165,106,655 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 73 | 365 | 511 | 2,555 | 64,621 | 323,105 | 452,347 | 2,261,735 | 4,717,333 | 23,586,665 | 33,021,331 | 165,106,655 |
| -1 | -5 | -7 | -35 | -73 | -365 | -511 | -2,555 | -64,621 | -323,105 | -452,347 | -2,261,735 | -4,717,333 | -23,586,665 | -33,021,331 | -165,106,655 |
Here are some more numbers to try:
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