A:
Positive:
1 x 12201811713 x 938600961 x 2000297151 x 808067793 x 1538691019 x 1197431963 x 621599211 x 13247
Negative:
-1 x -122018117-13 x -9386009-61 x -2000297-151 x -808067-793 x -153869-1019 x -119743-1963 x -62159-9211 x -13247
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 122,018,117, 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 | 122,018,117 | |
| -1 | -122,018,117 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 122,018,117.
Example:
1 x 122,018,117 = 122,018,117
and
-1 x -122,018,117 = 122,018,117
Notice both answers equal 122,018,117
With that explanation out of the way, let's continue. Next, we take the number 122,018,117 and divide it by 2:
122,018,117 ÷ 2 = 61,009,058.5
If the quotient is a whole number, then 2 and 61,009,058.5 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 | 122,018,117 | |
| -1 | -122,018,117 |
Now, we try dividing 122,018,117 by 3:
122,018,117 ÷ 3 = 40,672,705.6667
If the quotient is a whole number, then 3 and 40,672,705.6667 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 | 122,018,117 | |
| -1 | -122,018,117 |
Let's try dividing by 4:
122,018,117 ÷ 4 = 30,504,529.25
If the quotient is a whole number, then 4 and 30,504,529.25 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 | 122,018,117 | |
| -1 | 122,018,117 |
If you did it right, you will end up with this table:
| 1 | 13 | 61 | 151 | 793 | 1,019 | 1,963 | 9,211 | 13,247 | 62,159 | 119,743 | 153,869 | 808,067 | 2,000,297 | 9,386,009 | 122,018,117 |
| -1 | -13 | -61 | -151 | -793 | -1,019 | -1,963 | -9,211 | -13,247 | -62,159 | -119,743 | -153,869 | -808,067 | -2,000,297 | -9,386,009 | -122,018,117 |
Here are some more numbers to try:
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