A:
Positive:
1 x 12024322713 x 924947917 x 7073131101 x 1190527221 x 5440871313 x 915791717 x 700315387 x 22321
Negative:
-1 x -120243227-13 x -9249479-17 x -7073131-101 x -1190527-221 x -544087-1313 x -91579-1717 x -70031-5387 x -22321
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 120,243,227, 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 | 120,243,227 | |
| -1 | -120,243,227 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,243,227.
Example:
1 x 120,243,227 = 120,243,227
and
-1 x -120,243,227 = 120,243,227
Notice both answers equal 120,243,227
With that explanation out of the way, let's continue. Next, we take the number 120,243,227 and divide it by 2:
120,243,227 ÷ 2 = 60,121,613.5
If the quotient is a whole number, then 2 and 60,121,613.5 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 | 120,243,227 | |
| -1 | -120,243,227 |
Now, we try dividing 120,243,227 by 3:
120,243,227 ÷ 3 = 40,081,075.6667
If the quotient is a whole number, then 3 and 40,081,075.6667 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 | 120,243,227 | |
| -1 | -120,243,227 |
Let's try dividing by 4:
120,243,227 ÷ 4 = 30,060,806.75
If the quotient is a whole number, then 4 and 30,060,806.75 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 | 120,243,227 | |
| -1 | 120,243,227 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 101 | 221 | 1,313 | 1,717 | 5,387 | 22,321 | 70,031 | 91,579 | 544,087 | 1,190,527 | 7,073,131 | 9,249,479 | 120,243,227 |
| -1 | -13 | -17 | -101 | -221 | -1,313 | -1,717 | -5,387 | -22,321 | -70,031 | -91,579 | -544,087 | -1,190,527 | -7,073,131 | -9,249,479 | -120,243,227 |
Here are some more numbers to try:
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