A:
Positive:
1 x 121924555 x 243849111 x 110840531 x 39330555 x 221681155 x 78661341 x 357551705 x 7151
Negative:
-1 x -12192455-5 x -2438491-11 x -1108405-31 x -393305-55 x -221681-155 x -78661-341 x -35755-1705 x -7151
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 12,192,455, 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 | 12,192,455 | |
| -1 | -12,192,455 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,192,455.
Example:
1 x 12,192,455 = 12,192,455
and
-1 x -12,192,455 = 12,192,455
Notice both answers equal 12,192,455
With that explanation out of the way, let's continue. Next, we take the number 12,192,455 and divide it by 2:
12,192,455 ÷ 2 = 6,096,227.5
If the quotient is a whole number, then 2 and 6,096,227.5 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 | 12,192,455 | |
| -1 | -12,192,455 |
Now, we try dividing 12,192,455 by 3:
12,192,455 ÷ 3 = 4,064,151.6667
If the quotient is a whole number, then 3 and 4,064,151.6667 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 | 12,192,455 | |
| -1 | -12,192,455 |
Let's try dividing by 4:
12,192,455 ÷ 4 = 3,048,113.75
If the quotient is a whole number, then 4 and 3,048,113.75 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 | 12,192,455 | |
| -1 | 12,192,455 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 31 | 55 | 155 | 341 | 1,705 | 7,151 | 35,755 | 78,661 | 221,681 | 393,305 | 1,108,405 | 2,438,491 | 12,192,455 |
| -1 | -5 | -11 | -31 | -55 | -155 | -341 | -1,705 | -7,151 | -35,755 | -78,661 | -221,681 | -393,305 | -1,108,405 | -2,438,491 | -12,192,455 |
Here are some more numbers to try:
Try the factor calculator