A:
Positive:
1 x 1221121555 x 2442243111 x 1110110555 x 2220221109 x 1120295545 x 2240591199 x 1018455995 x 20369
Negative:
-1 x -122112155-5 x -24422431-11 x -11101105-55 x -2220221-109 x -1120295-545 x -224059-1199 x -101845-5995 x -20369
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 122,112,155, 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 | 122,112,155 | |
| -1 | -122,112,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 122,112,155.
Example:
1 x 122,112,155 = 122,112,155
and
-1 x -122,112,155 = 122,112,155
Notice both answers equal 122,112,155
With that explanation out of the way, let's continue. Next, we take the number 122,112,155 and divide it by 2:
122,112,155 ÷ 2 = 61,056,077.5
If the quotient is a whole number, then 2 and 61,056,077.5 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 | 122,112,155 | |
| -1 | -122,112,155 |
Now, we try dividing 122,112,155 by 3:
122,112,155 ÷ 3 = 40,704,051.6667
If the quotient is a whole number, then 3 and 40,704,051.6667 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 | 122,112,155 | |
| -1 | -122,112,155 |
Let's try dividing by 4:
122,112,155 ÷ 4 = 30,528,038.75
If the quotient is a whole number, then 4 and 30,528,038.75 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 | 122,112,155 | |
| -1 | 122,112,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 109 | 545 | 1,199 | 5,995 | 20,369 | 101,845 | 224,059 | 1,120,295 | 2,220,221 | 11,101,105 | 24,422,431 | 122,112,155 |
| -1 | -5 | -11 | -55 | -109 | -545 | -1,199 | -5,995 | -20,369 | -101,845 | -224,059 | -1,120,295 | -2,220,221 | -11,101,105 | -24,422,431 | -122,112,155 |
Here are some more numbers to try:
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