A:
Positive:
1 x 12132781111 x 1102980143 x 2821577179 x 677809473 x 2565071433 x 846671969 x 616197697 x 15763
Negative:
-1 x -121327811-11 x -11029801-43 x -2821577-179 x -677809-473 x -256507-1433 x -84667-1969 x -61619-7697 x -15763
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 121,327,811, 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 | 121,327,811 | |
| -1 | -121,327,811 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,327,811.
Example:
1 x 121,327,811 = 121,327,811
and
-1 x -121,327,811 = 121,327,811
Notice both answers equal 121,327,811
With that explanation out of the way, let's continue. Next, we take the number 121,327,811 and divide it by 2:
121,327,811 ÷ 2 = 60,663,905.5
If the quotient is a whole number, then 2 and 60,663,905.5 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 | 121,327,811 | |
| -1 | -121,327,811 |
Now, we try dividing 121,327,811 by 3:
121,327,811 ÷ 3 = 40,442,603.6667
If the quotient is a whole number, then 3 and 40,442,603.6667 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 | 121,327,811 | |
| -1 | -121,327,811 |
Let's try dividing by 4:
121,327,811 ÷ 4 = 30,331,952.75
If the quotient is a whole number, then 4 and 30,331,952.75 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 | 121,327,811 | |
| -1 | 121,327,811 |
If you did it right, you will end up with this table:
| 1 | 11 | 43 | 179 | 473 | 1,433 | 1,969 | 7,697 | 15,763 | 61,619 | 84,667 | 256,507 | 677,809 | 2,821,577 | 11,029,801 | 121,327,811 |
| -1 | -11 | -43 | -179 | -473 | -1,433 | -1,969 | -7,697 | -15,763 | -61,619 | -84,667 | -256,507 | -677,809 | -2,821,577 | -11,029,801 | -121,327,811 |
Here are some more numbers to try:
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