A:
Positive:
1 x 12022024311 x 1092911313 x 924771117 x 7071779143 x 840701187 x 642889221 x 543983289 x 4159872431 x 494532909 x 413273179 x 378173757 x 31999
Negative:
-1 x -120220243-11 x -10929113-13 x -9247711-17 x -7071779-143 x -840701-187 x -642889-221 x -543983-289 x -415987-2431 x -49453-2909 x -41327-3179 x -37817-3757 x -31999
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 120,220,243, 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 | 120,220,243 | |
| -1 | -120,220,243 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,220,243.
Example:
1 x 120,220,243 = 120,220,243
and
-1 x -120,220,243 = 120,220,243
Notice both answers equal 120,220,243
With that explanation out of the way, let's continue. Next, we take the number 120,220,243 and divide it by 2:
120,220,243 ÷ 2 = 60,110,121.5
If the quotient is a whole number, then 2 and 60,110,121.5 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 | 120,220,243 | |
| -1 | -120,220,243 |
Now, we try dividing 120,220,243 by 3:
120,220,243 ÷ 3 = 40,073,414.3333
If the quotient is a whole number, then 3 and 40,073,414.3333 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 | 120,220,243 | |
| -1 | -120,220,243 |
Let's try dividing by 4:
120,220,243 ÷ 4 = 30,055,060.75
If the quotient is a whole number, then 4 and 30,055,060.75 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 | 120,220,243 | |
| -1 | 120,220,243 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 17 | 143 | 187 | 221 | 289 | 2,431 | 2,909 | 3,179 | 3,757 | 31,999 | 37,817 | 41,327 | 49,453 | 415,987 | 543,983 | 642,889 | 840,701 | 7,071,779 | 9,247,711 | 10,929,113 | 120,220,243 |
| -1 | -11 | -13 | -17 | -143 | -187 | -221 | -289 | -2,431 | -2,909 | -3,179 | -3,757 | -31,999 | -37,817 | -41,327 | -49,453 | -415,987 | -543,983 | -642,889 | -840,701 | -7,071,779 | -9,247,711 | -10,929,113 | -120,220,243 |
Here are some more numbers to try:
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