A:
Positive:
1 x 12070554111 x 1097323123 x 524806747 x 2568203253 x 477097517 x 2334731081 x 11166110151 x 11891
Negative:
-1 x -120705541-11 x -10973231-23 x -5248067-47 x -2568203-253 x -477097-517 x -233473-1081 x -111661-10151 x -11891
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 120,705,541, 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 | 120,705,541 | |
| -1 | -120,705,541 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,705,541.
Example:
1 x 120,705,541 = 120,705,541
and
-1 x -120,705,541 = 120,705,541
Notice both answers equal 120,705,541
With that explanation out of the way, let's continue. Next, we take the number 120,705,541 and divide it by 2:
120,705,541 ÷ 2 = 60,352,770.5
If the quotient is a whole number, then 2 and 60,352,770.5 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 | 120,705,541 | |
| -1 | -120,705,541 |
Now, we try dividing 120,705,541 by 3:
120,705,541 ÷ 3 = 40,235,180.3333
If the quotient is a whole number, then 3 and 40,235,180.3333 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 | 120,705,541 | |
| -1 | -120,705,541 |
Let's try dividing by 4:
120,705,541 ÷ 4 = 30,176,385.25
If the quotient is a whole number, then 4 and 30,176,385.25 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 | 120,705,541 | |
| -1 | 120,705,541 |
If you did it right, you will end up with this table:
| 1 | 11 | 23 | 47 | 253 | 517 | 1,081 | 10,151 | 11,891 | 111,661 | 233,473 | 477,097 | 2,568,203 | 5,248,067 | 10,973,231 | 120,705,541 |
| -1 | -11 | -23 | -47 | -253 | -517 | -1,081 | -10,151 | -11,891 | -111,661 | -233,473 | -477,097 | -2,568,203 | -5,248,067 | -10,973,231 | -120,705,541 |
Here are some more numbers to try:
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