A:
Positive:
1 x 1210606555 x 2421213117 x 712121585 x 1424243199 x 608345289 x 418895421 x 287555995 x 1216691445 x 837792105 x 575113383 x 357857157 x 16915
Negative:
-1 x -121060655-5 x -24212131-17 x -7121215-85 x -1424243-199 x -608345-289 x -418895-421 x -287555-995 x -121669-1445 x -83779-2105 x -57511-3383 x -35785-7157 x -16915
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 121,060,655, 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 | 121,060,655 | |
| -1 | -121,060,655 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,060,655.
Example:
1 x 121,060,655 = 121,060,655
and
-1 x -121,060,655 = 121,060,655
Notice both answers equal 121,060,655
With that explanation out of the way, let's continue. Next, we take the number 121,060,655 and divide it by 2:
121,060,655 ÷ 2 = 60,530,327.5
If the quotient is a whole number, then 2 and 60,530,327.5 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 | 121,060,655 | |
| -1 | -121,060,655 |
Now, we try dividing 121,060,655 by 3:
121,060,655 ÷ 3 = 40,353,551.6667
If the quotient is a whole number, then 3 and 40,353,551.6667 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 | 121,060,655 | |
| -1 | -121,060,655 |
Let's try dividing by 4:
121,060,655 ÷ 4 = 30,265,163.75
If the quotient is a whole number, then 4 and 30,265,163.75 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 | 121,060,655 | |
| -1 | 121,060,655 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 199 | 289 | 421 | 995 | 1,445 | 2,105 | 3,383 | 7,157 | 16,915 | 35,785 | 57,511 | 83,779 | 121,669 | 287,555 | 418,895 | 608,345 | 1,424,243 | 7,121,215 | 24,212,131 | 121,060,655 |
| -1 | -5 | -17 | -85 | -199 | -289 | -421 | -995 | -1,445 | -2,105 | -3,383 | -7,157 | -16,915 | -35,785 | -57,511 | -83,779 | -121,669 | -287,555 | -418,895 | -608,345 | -1,424,243 | -7,121,215 | -24,212,131 | -121,060,655 |
Here are some more numbers to try:
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