A:
Positive:
1 x 21265820319 x 1119253737 x 5747519113 x 1881931703 x 3025012147 x 990492677 x 794394181 x 50863
Negative:
-1 x -212658203-19 x -11192537-37 x -5747519-113 x -1881931-703 x -302501-2147 x -99049-2677 x -79439-4181 x -50863
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 212,658,203, 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 | 212,658,203 | |
| -1 | -212,658,203 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 212,658,203.
Example:
1 x 212,658,203 = 212,658,203
and
-1 x -212,658,203 = 212,658,203
Notice both answers equal 212,658,203
With that explanation out of the way, let's continue. Next, we take the number 212,658,203 and divide it by 2:
212,658,203 ÷ 2 = 106,329,101.5
If the quotient is a whole number, then 2 and 106,329,101.5 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 | 212,658,203 | |
| -1 | -212,658,203 |
Now, we try dividing 212,658,203 by 3:
212,658,203 ÷ 3 = 70,886,067.6667
If the quotient is a whole number, then 3 and 70,886,067.6667 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 | 212,658,203 | |
| -1 | -212,658,203 |
Let's try dividing by 4:
212,658,203 ÷ 4 = 53,164,550.75
If the quotient is a whole number, then 4 and 53,164,550.75 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 | 212,658,203 | |
| -1 | 212,658,203 |
If you did it right, you will end up with this table:
| 1 | 19 | 37 | 113 | 703 | 2,147 | 2,677 | 4,181 | 50,863 | 79,439 | 99,049 | 302,501 | 1,881,931 | 5,747,519 | 11,192,537 | 212,658,203 |
| -1 | -19 | -37 | -113 | -703 | -2,147 | -2,677 | -4,181 | -50,863 | -79,439 | -99,049 | -302,501 | -1,881,931 | -5,747,519 | -11,192,537 | -212,658,203 |
Here are some more numbers to try:
Try the factor calculator