A:
Positive:
1 x 1220316555 x 2440633131 x 3936505155 x 787301419 x 2912451879 x 649452095 x 582499395 x 12989
Negative:
-1 x -122031655-5 x -24406331-31 x -3936505-155 x -787301-419 x -291245-1879 x -64945-2095 x -58249-9395 x -12989
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 122,031,655, 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 | 122,031,655 | |
| -1 | -122,031,655 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 122,031,655.
Example:
1 x 122,031,655 = 122,031,655
and
-1 x -122,031,655 = 122,031,655
Notice both answers equal 122,031,655
With that explanation out of the way, let's continue. Next, we take the number 122,031,655 and divide it by 2:
122,031,655 ÷ 2 = 61,015,827.5
If the quotient is a whole number, then 2 and 61,015,827.5 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 | 122,031,655 | |
| -1 | -122,031,655 |
Now, we try dividing 122,031,655 by 3:
122,031,655 ÷ 3 = 40,677,218.3333
If the quotient is a whole number, then 3 and 40,677,218.3333 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 | 122,031,655 | |
| -1 | -122,031,655 |
Let's try dividing by 4:
122,031,655 ÷ 4 = 30,507,913.75
If the quotient is a whole number, then 4 and 30,507,913.75 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 | 122,031,655 | |
| -1 | 122,031,655 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 155 | 419 | 1,879 | 2,095 | 9,395 | 12,989 | 58,249 | 64,945 | 291,245 | 787,301 | 3,936,505 | 24,406,331 | 122,031,655 |
| -1 | -5 | -31 | -155 | -419 | -1,879 | -2,095 | -9,395 | -12,989 | -58,249 | -64,945 | -291,245 | -787,301 | -3,936,505 | -24,406,331 | -122,031,655 |
Here are some more numbers to try:
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