A:
Positive:
1 x 1233201355 x 2466402723 x 536174553 x 2326795115 x 1072349265 x 4653591219 x 1011656095 x 20233
Negative:
-1 x -123320135-5 x -24664027-23 x -5361745-53 x -2326795-115 x -1072349-265 x -465359-1219 x -101165-6095 x -20233
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 123,320,135, 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 | 123,320,135 | |
| -1 | -123,320,135 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 123,320,135.
Example:
1 x 123,320,135 = 123,320,135
and
-1 x -123,320,135 = 123,320,135
Notice both answers equal 123,320,135
With that explanation out of the way, let's continue. Next, we take the number 123,320,135 and divide it by 2:
123,320,135 ÷ 2 = 61,660,067.5
If the quotient is a whole number, then 2 and 61,660,067.5 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 | 123,320,135 | |
| -1 | -123,320,135 |
Now, we try dividing 123,320,135 by 3:
123,320,135 ÷ 3 = 41,106,711.6667
If the quotient is a whole number, then 3 and 41,106,711.6667 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 | 123,320,135 | |
| -1 | -123,320,135 |
Let's try dividing by 4:
123,320,135 ÷ 4 = 30,830,033.75
If the quotient is a whole number, then 4 and 30,830,033.75 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 | 123,320,135 | |
| -1 | 123,320,135 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 53 | 115 | 265 | 1,219 | 6,095 | 20,233 | 101,165 | 465,359 | 1,072,349 | 2,326,795 | 5,361,745 | 24,664,027 | 123,320,135 |
| -1 | -5 | -23 | -53 | -115 | -265 | -1,219 | -6,095 | -20,233 | -101,165 | -465,359 | -1,072,349 | -2,326,795 | -5,361,745 | -24,664,027 | -123,320,135 |
Here are some more numbers to try:
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