A:
Positive:
1 x 12005321911 x 1091392913 x 923486379 x 1519661143 x 839533869 x 1381511027 x 11689710627 x 11297
Negative:
-1 x -120053219-11 x -10913929-13 x -9234863-79 x -1519661-143 x -839533-869 x -138151-1027 x -116897-10627 x -11297
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 120,053,219, 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 | 120,053,219 | |
| -1 | -120,053,219 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,053,219.
Example:
1 x 120,053,219 = 120,053,219
and
-1 x -120,053,219 = 120,053,219
Notice both answers equal 120,053,219
With that explanation out of the way, let's continue. Next, we take the number 120,053,219 and divide it by 2:
120,053,219 ÷ 2 = 60,026,609.5
If the quotient is a whole number, then 2 and 60,026,609.5 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 | 120,053,219 | |
| -1 | -120,053,219 |
Now, we try dividing 120,053,219 by 3:
120,053,219 ÷ 3 = 40,017,739.6667
If the quotient is a whole number, then 3 and 40,017,739.6667 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 | 120,053,219 | |
| -1 | -120,053,219 |
Let's try dividing by 4:
120,053,219 ÷ 4 = 30,013,304.75
If the quotient is a whole number, then 4 and 30,013,304.75 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 | 120,053,219 | |
| -1 | 120,053,219 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 79 | 143 | 869 | 1,027 | 10,627 | 11,297 | 116,897 | 138,151 | 839,533 | 1,519,661 | 9,234,863 | 10,913,929 | 120,053,219 |
| -1 | -11 | -13 | -79 | -143 | -869 | -1,027 | -10,627 | -11,297 | -116,897 | -138,151 | -839,533 | -1,519,661 | -9,234,863 | -10,913,929 | -120,053,219 |
Here are some more numbers to try:
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