A:
Positive:
1 x 19611991919 x 1032210123 x 852695331 x 6326449437 x 448787467 x 419957589 x 332971713 x 275063961 x 2040798873 x 2210310741 x 1825913547 x 14477
Negative:
-1 x -196119919-19 x -10322101-23 x -8526953-31 x -6326449-437 x -448787-467 x -419957-589 x -332971-713 x -275063-961 x -204079-8873 x -22103-10741 x -18259-13547 x -14477
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 196,119,919, 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 | 196,119,919 | |
| -1 | -196,119,919 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 196,119,919.
Example:
1 x 196,119,919 = 196,119,919
and
-1 x -196,119,919 = 196,119,919
Notice both answers equal 196,119,919
With that explanation out of the way, let's continue. Next, we take the number 196,119,919 and divide it by 2:
196,119,919 ÷ 2 = 98,059,959.5
If the quotient is a whole number, then 2 and 98,059,959.5 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 | 196,119,919 | |
| -1 | -196,119,919 |
Now, we try dividing 196,119,919 by 3:
196,119,919 ÷ 3 = 65,373,306.3333
If the quotient is a whole number, then 3 and 65,373,306.3333 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 | 196,119,919 | |
| -1 | -196,119,919 |
Let's try dividing by 4:
196,119,919 ÷ 4 = 49,029,979.75
If the quotient is a whole number, then 4 and 49,029,979.75 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 | 196,119,919 | |
| -1 | 196,119,919 |
If you did it right, you will end up with this table:
| 1 | 19 | 23 | 31 | 437 | 467 | 589 | 713 | 961 | 8,873 | 10,741 | 13,547 | 14,477 | 18,259 | 22,103 | 204,079 | 275,063 | 332,971 | 419,957 | 448,787 | 6,326,449 | 8,526,953 | 10,322,101 | 196,119,919 |
| -1 | -19 | -23 | -31 | -437 | -467 | -589 | -713 | -961 | -8,873 | -10,741 | -13,547 | -14,477 | -18,259 | -22,103 | -204,079 | -275,063 | -332,971 | -419,957 | -448,787 | -6,326,449 | -8,526,953 | -10,322,101 | -196,119,919 |
Here are some more numbers to try:
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