A:
Positive:
1 x 120120655 x 240241313 x 92400565 x 184801181 x 66365905 x 132731021 x 117652353 x 5105
Negative:
-1 x -12012065-5 x -2402413-13 x -924005-65 x -184801-181 x -66365-905 x -13273-1021 x -11765-2353 x -5105
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 12,012,065, 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 | 12,012,065 | |
| -1 | -12,012,065 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,012,065.
Example:
1 x 12,012,065 = 12,012,065
and
-1 x -12,012,065 = 12,012,065
Notice both answers equal 12,012,065
With that explanation out of the way, let's continue. Next, we take the number 12,012,065 and divide it by 2:
12,012,065 ÷ 2 = 6,006,032.5
If the quotient is a whole number, then 2 and 6,006,032.5 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 | 12,012,065 | |
| -1 | -12,012,065 |
Now, we try dividing 12,012,065 by 3:
12,012,065 ÷ 3 = 4,004,021.6667
If the quotient is a whole number, then 3 and 4,004,021.6667 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 | 12,012,065 | |
| -1 | -12,012,065 |
Let's try dividing by 4:
12,012,065 ÷ 4 = 3,003,016.25
If the quotient is a whole number, then 4 and 3,003,016.25 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 | 12,012,065 | |
| -1 | 12,012,065 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 181 | 905 | 1,021 | 2,353 | 5,105 | 11,765 | 13,273 | 66,365 | 184,801 | 924,005 | 2,402,413 | 12,012,065 |
| -1 | -5 | -13 | -65 | -181 | -905 | -1,021 | -2,353 | -5,105 | -11,765 | -13,273 | -66,365 | -184,801 | -924,005 | -2,402,413 | -12,012,065 |
Here are some more numbers to try:
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