A:
Positive:
1 x 12221506713 x 940115973 x 167417989 x 1373203949 x 1287831157 x 1056311447 x 844616497 x 18811
Negative:
-1 x -122215067-13 x -9401159-73 x -1674179-89 x -1373203-949 x -128783-1157 x -105631-1447 x -84461-6497 x -18811
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 122,215,067, 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 | 122,215,067 | |
| -1 | -122,215,067 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 122,215,067.
Example:
1 x 122,215,067 = 122,215,067
and
-1 x -122,215,067 = 122,215,067
Notice both answers equal 122,215,067
With that explanation out of the way, let's continue. Next, we take the number 122,215,067 and divide it by 2:
122,215,067 ÷ 2 = 61,107,533.5
If the quotient is a whole number, then 2 and 61,107,533.5 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 | 122,215,067 | |
| -1 | -122,215,067 |
Now, we try dividing 122,215,067 by 3:
122,215,067 ÷ 3 = 40,738,355.6667
If the quotient is a whole number, then 3 and 40,738,355.6667 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 | 122,215,067 | |
| -1 | -122,215,067 |
Let's try dividing by 4:
122,215,067 ÷ 4 = 30,553,766.75
If the quotient is a whole number, then 4 and 30,553,766.75 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 | 122,215,067 | |
| -1 | 122,215,067 |
If you did it right, you will end up with this table:
| 1 | 13 | 73 | 89 | 949 | 1,157 | 1,447 | 6,497 | 18,811 | 84,461 | 105,631 | 128,783 | 1,373,203 | 1,674,179 | 9,401,159 | 122,215,067 |
| -1 | -13 | -73 | -89 | -949 | -1,157 | -1,447 | -6,497 | -18,811 | -84,461 | -105,631 | -128,783 | -1,373,203 | -1,674,179 | -9,401,159 | -122,215,067 |
Here are some more numbers to try:
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