A:
Positive:
1 x 21124421323 x 918453183 x 2545111239 x 883867463 x 4562511909 x 1106575497 x 3842910649 x 19837
Negative:
-1 x -211244213-23 x -9184531-83 x -2545111-239 x -883867-463 x -456251-1909 x -110657-5497 x -38429-10649 x -19837
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 211,244,213, 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 | 211,244,213 | |
| -1 | -211,244,213 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 211,244,213.
Example:
1 x 211,244,213 = 211,244,213
and
-1 x -211,244,213 = 211,244,213
Notice both answers equal 211,244,213
With that explanation out of the way, let's continue. Next, we take the number 211,244,213 and divide it by 2:
211,244,213 ÷ 2 = 105,622,106.5
If the quotient is a whole number, then 2 and 105,622,106.5 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 | 211,244,213 | |
| -1 | -211,244,213 |
Now, we try dividing 211,244,213 by 3:
211,244,213 ÷ 3 = 70,414,737.6667
If the quotient is a whole number, then 3 and 70,414,737.6667 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 | 211,244,213 | |
| -1 | -211,244,213 |
Let's try dividing by 4:
211,244,213 ÷ 4 = 52,811,053.25
If the quotient is a whole number, then 4 and 52,811,053.25 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 | 211,244,213 | |
| -1 | 211,244,213 |
If you did it right, you will end up with this table:
| 1 | 23 | 83 | 239 | 463 | 1,909 | 5,497 | 10,649 | 19,837 | 38,429 | 110,657 | 456,251 | 883,867 | 2,545,111 | 9,184,531 | 211,244,213 |
| -1 | -23 | -83 | -239 | -463 | -1,909 | -5,497 | -10,649 | -19,837 | -38,429 | -110,657 | -456,251 | -883,867 | -2,545,111 | -9,184,531 | -211,244,213 |
Here are some more numbers to try:
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