A:
Positive:
1 x 1237716555 x 247543317 x 1768166535 x 3536333307 x 4031651535 x 806332149 x 5759510745 x 11519
Negative:
-1 x -123771655-5 x -24754331-7 x -17681665-35 x -3536333-307 x -403165-1535 x -80633-2149 x -57595-10745 x -11519
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 123,771,655, 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 | 123,771,655 | |
| -1 | -123,771,655 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 123,771,655.
Example:
1 x 123,771,655 = 123,771,655
and
-1 x -123,771,655 = 123,771,655
Notice both answers equal 123,771,655
With that explanation out of the way, let's continue. Next, we take the number 123,771,655 and divide it by 2:
123,771,655 ÷ 2 = 61,885,827.5
If the quotient is a whole number, then 2 and 61,885,827.5 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 | 123,771,655 | |
| -1 | -123,771,655 |
Now, we try dividing 123,771,655 by 3:
123,771,655 ÷ 3 = 41,257,218.3333
If the quotient is a whole number, then 3 and 41,257,218.3333 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 | 123,771,655 | |
| -1 | -123,771,655 |
Let's try dividing by 4:
123,771,655 ÷ 4 = 30,942,913.75
If the quotient is a whole number, then 4 and 30,942,913.75 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 | 123,771,655 | |
| -1 | 123,771,655 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 307 | 1,535 | 2,149 | 10,745 | 11,519 | 57,595 | 80,633 | 403,165 | 3,536,333 | 17,681,665 | 24,754,331 | 123,771,655 |
| -1 | -5 | -7 | -35 | -307 | -1,535 | -2,149 | -10,745 | -11,519 | -57,595 | -80,633 | -403,165 | -3,536,333 | -17,681,665 | -24,754,331 | -123,771,655 |
Here are some more numbers to try:
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