A:
Positive:
1 x 20031222123 x 8709227137 x 1462133151 x 1326571421 x 4758013151 x 635713473 x 576779683 x 20687
Negative:
-1 x -200312221-23 x -8709227-137 x -1462133-151 x -1326571-421 x -475801-3151 x -63571-3473 x -57677-9683 x -20687
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 200,312,221, 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 | 200,312,221 | |
| -1 | -200,312,221 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 200,312,221.
Example:
1 x 200,312,221 = 200,312,221
and
-1 x -200,312,221 = 200,312,221
Notice both answers equal 200,312,221
With that explanation out of the way, let's continue. Next, we take the number 200,312,221 and divide it by 2:
200,312,221 ÷ 2 = 100,156,110.5
If the quotient is a whole number, then 2 and 100,156,110.5 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 | 200,312,221 | |
| -1 | -200,312,221 |
Now, we try dividing 200,312,221 by 3:
200,312,221 ÷ 3 = 66,770,740.3333
If the quotient is a whole number, then 3 and 66,770,740.3333 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 | 200,312,221 | |
| -1 | -200,312,221 |
Let's try dividing by 4:
200,312,221 ÷ 4 = 50,078,055.25
If the quotient is a whole number, then 4 and 50,078,055.25 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 | 200,312,221 | |
| -1 | 200,312,221 |
If you did it right, you will end up with this table:
| 1 | 23 | 137 | 151 | 421 | 3,151 | 3,473 | 9,683 | 20,687 | 57,677 | 63,571 | 475,801 | 1,326,571 | 1,462,133 | 8,709,227 | 200,312,221 |
| -1 | -23 | -137 | -151 | -421 | -3,151 | -3,473 | -9,683 | -20,687 | -57,677 | -63,571 | -475,801 | -1,326,571 | -1,462,133 | -8,709,227 | -200,312,221 |
Here are some more numbers to try:
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