A:
Positive:
1 x 20120312311 x 1829119397 x 2074259269 x 747967701 x 2870231067 x 1885692959 x 679977711 x 26093
Negative:
-1 x -201203123-11 x -18291193-97 x -2074259-269 x -747967-701 x -287023-1067 x -188569-2959 x -67997-7711 x -26093
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 201,203,123, 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 | 201,203,123 | |
| -1 | -201,203,123 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 201,203,123.
Example:
1 x 201,203,123 = 201,203,123
and
-1 x -201,203,123 = 201,203,123
Notice both answers equal 201,203,123
With that explanation out of the way, let's continue. Next, we take the number 201,203,123 and divide it by 2:
201,203,123 ÷ 2 = 100,601,561.5
If the quotient is a whole number, then 2 and 100,601,561.5 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 | 201,203,123 | |
| -1 | -201,203,123 |
Now, we try dividing 201,203,123 by 3:
201,203,123 ÷ 3 = 67,067,707.6667
If the quotient is a whole number, then 3 and 67,067,707.6667 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 | 201,203,123 | |
| -1 | -201,203,123 |
Let's try dividing by 4:
201,203,123 ÷ 4 = 50,300,780.75
If the quotient is a whole number, then 4 and 50,300,780.75 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 | 201,203,123 | |
| -1 | 201,203,123 |
If you did it right, you will end up with this table:
| 1 | 11 | 97 | 269 | 701 | 1,067 | 2,959 | 7,711 | 26,093 | 67,997 | 188,569 | 287,023 | 747,967 | 2,074,259 | 18,291,193 | 201,203,123 |
| -1 | -11 | -97 | -269 | -701 | -1,067 | -2,959 | -7,711 | -26,093 | -67,997 | -188,569 | -287,023 | -747,967 | -2,074,259 | -18,291,193 | -201,203,123 |
Here are some more numbers to try:
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