A:
Positive:
1 x 121138555 x 242277113 x 93183565 x 186367227 x 53365821 x 147551135 x 106732951 x 4105
Negative:
-1 x -12113855-5 x -2422771-13 x -931835-65 x -186367-227 x -53365-821 x -14755-1135 x -10673-2951 x -4105
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 12,113,855, 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 | 12,113,855 | |
| -1 | -12,113,855 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,113,855.
Example:
1 x 12,113,855 = 12,113,855
and
-1 x -12,113,855 = 12,113,855
Notice both answers equal 12,113,855
With that explanation out of the way, let's continue. Next, we take the number 12,113,855 and divide it by 2:
12,113,855 ÷ 2 = 6,056,927.5
If the quotient is a whole number, then 2 and 6,056,927.5 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 | 12,113,855 | |
| -1 | -12,113,855 |
Now, we try dividing 12,113,855 by 3:
12,113,855 ÷ 3 = 4,037,951.6667
If the quotient is a whole number, then 3 and 4,037,951.6667 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 | 12,113,855 | |
| -1 | -12,113,855 |
Let's try dividing by 4:
12,113,855 ÷ 4 = 3,028,463.75
If the quotient is a whole number, then 4 and 3,028,463.75 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 | 12,113,855 | |
| -1 | 12,113,855 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 227 | 821 | 1,135 | 2,951 | 4,105 | 10,673 | 14,755 | 53,365 | 186,367 | 931,835 | 2,422,771 | 12,113,855 |
| -1 | -5 | -13 | -65 | -227 | -821 | -1,135 | -2,951 | -4,105 | -10,673 | -14,755 | -53,365 | -186,367 | -931,835 | -2,422,771 | -12,113,855 |
Here are some more numbers to try:
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