A:
Positive:
1 x 2120002437 x 3028574913 x 1630771191 x 2329673547 x 3875693829 x 553674259 x 497777111 x 29813
Negative:
-1 x -212000243-7 x -30285749-13 x -16307711-91 x -2329673-547 x -387569-3829 x -55367-4259 x -49777-7111 x -29813
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 212,000,243, 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 | 212,000,243 | |
| -1 | -212,000,243 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 212,000,243.
Example:
1 x 212,000,243 = 212,000,243
and
-1 x -212,000,243 = 212,000,243
Notice both answers equal 212,000,243
With that explanation out of the way, let's continue. Next, we take the number 212,000,243 and divide it by 2:
212,000,243 ÷ 2 = 106,000,121.5
If the quotient is a whole number, then 2 and 106,000,121.5 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 | 212,000,243 | |
| -1 | -212,000,243 |
Now, we try dividing 212,000,243 by 3:
212,000,243 ÷ 3 = 70,666,747.6667
If the quotient is a whole number, then 3 and 70,666,747.6667 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 | 212,000,243 | |
| -1 | -212,000,243 |
Let's try dividing by 4:
212,000,243 ÷ 4 = 53,000,060.75
If the quotient is a whole number, then 4 and 53,000,060.75 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 | 212,000,243 | |
| -1 | 212,000,243 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 547 | 3,829 | 4,259 | 7,111 | 29,813 | 49,777 | 55,367 | 387,569 | 2,329,673 | 16,307,711 | 30,285,749 | 212,000,243 |
| -1 | -7 | -13 | -91 | -547 | -3,829 | -4,259 | -7,111 | -29,813 | -49,777 | -55,367 | -387,569 | -2,329,673 | -16,307,711 | -30,285,749 | -212,000,243 |
Here are some more numbers to try:
Try the factor calculator