A:
Positive:
1 x 12084106111 x 1098555161 x 198100173 x 1655357671 x 180091803 x 1504872467 x 489834453 x 27137
Negative:
-1 x -120841061-11 x -10985551-61 x -1981001-73 x -1655357-671 x -180091-803 x -150487-2467 x -48983-4453 x -27137
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 120,841,061, 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 | 120,841,061 | |
| -1 | -120,841,061 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,841,061.
Example:
1 x 120,841,061 = 120,841,061
and
-1 x -120,841,061 = 120,841,061
Notice both answers equal 120,841,061
With that explanation out of the way, let's continue. Next, we take the number 120,841,061 and divide it by 2:
120,841,061 ÷ 2 = 60,420,530.5
If the quotient is a whole number, then 2 and 60,420,530.5 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 | 120,841,061 | |
| -1 | -120,841,061 |
Now, we try dividing 120,841,061 by 3:
120,841,061 ÷ 3 = 40,280,353.6667
If the quotient is a whole number, then 3 and 40,280,353.6667 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 | 120,841,061 | |
| -1 | -120,841,061 |
Let's try dividing by 4:
120,841,061 ÷ 4 = 30,210,265.25
If the quotient is a whole number, then 4 and 30,210,265.25 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 | 120,841,061 | |
| -1 | 120,841,061 |
If you did it right, you will end up with this table:
| 1 | 11 | 61 | 73 | 671 | 803 | 2,467 | 4,453 | 27,137 | 48,983 | 150,487 | 180,091 | 1,655,357 | 1,981,001 | 10,985,551 | 120,841,061 |
| -1 | -11 | -61 | -73 | -671 | -803 | -2,467 | -4,453 | -27,137 | -48,983 | -150,487 | -180,091 | -1,655,357 | -1,981,001 | -10,985,551 | -120,841,061 |
Here are some more numbers to try:
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