A:
Positive:
1 x 120101055 x 240202189 x 134945137 x 87665197 x 60965445 x 26989685 x 17533985 x 12193
Negative:
-1 x -12010105-5 x -2402021-89 x -134945-137 x -87665-197 x -60965-445 x -26989-685 x -17533-985 x -12193
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 12,010,105, 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 | 12,010,105 | |
| -1 | -12,010,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,010,105.
Example:
1 x 12,010,105 = 12,010,105
and
-1 x -12,010,105 = 12,010,105
Notice both answers equal 12,010,105
With that explanation out of the way, let's continue. Next, we take the number 12,010,105 and divide it by 2:
12,010,105 ÷ 2 = 6,005,052.5
If the quotient is a whole number, then 2 and 6,005,052.5 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 | 12,010,105 | |
| -1 | -12,010,105 |
Now, we try dividing 12,010,105 by 3:
12,010,105 ÷ 3 = 4,003,368.3333
If the quotient is a whole number, then 3 and 4,003,368.3333 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 | 12,010,105 | |
| -1 | -12,010,105 |
Let's try dividing by 4:
12,010,105 ÷ 4 = 3,002,526.25
If the quotient is a whole number, then 4 and 3,002,526.25 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 | 12,010,105 | |
| -1 | 12,010,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 89 | 137 | 197 | 445 | 685 | 985 | 12,193 | 17,533 | 26,989 | 60,965 | 87,665 | 134,945 | 2,402,021 | 12,010,105 |
| -1 | -5 | -89 | -137 | -197 | -445 | -685 | -985 | -12,193 | -17,533 | -26,989 | -60,965 | -87,665 | -134,945 | -2,402,021 | -12,010,105 |
Here are some more numbers to try:
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