A:
Positive:
1 x 1206448255 x 241289657 x 1723497525 x 482579335 x 3446995175 x 689399227 x 5314751135 x 1062951589 x 759253037 x 397255675 x 212597945 x 15185
Negative:
-1 x -120644825-5 x -24128965-7 x -17234975-25 x -4825793-35 x -3446995-175 x -689399-227 x -531475-1135 x -106295-1589 x -75925-3037 x -39725-5675 x -21259-7945 x -15185
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 120,644,825, 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 | 120,644,825 | |
| -1 | -120,644,825 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,644,825.
Example:
1 x 120,644,825 = 120,644,825
and
-1 x -120,644,825 = 120,644,825
Notice both answers equal 120,644,825
With that explanation out of the way, let's continue. Next, we take the number 120,644,825 and divide it by 2:
120,644,825 ÷ 2 = 60,322,412.5
If the quotient is a whole number, then 2 and 60,322,412.5 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 | 120,644,825 | |
| -1 | -120,644,825 |
Now, we try dividing 120,644,825 by 3:
120,644,825 ÷ 3 = 40,214,941.6667
If the quotient is a whole number, then 3 and 40,214,941.6667 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 | 120,644,825 | |
| -1 | -120,644,825 |
Let's try dividing by 4:
120,644,825 ÷ 4 = 30,161,206.25
If the quotient is a whole number, then 4 and 30,161,206.25 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 | 120,644,825 | |
| -1 | 120,644,825 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 175 | 227 | 1,135 | 1,589 | 3,037 | 5,675 | 7,945 | 15,185 | 21,259 | 39,725 | 75,925 | 106,295 | 531,475 | 689,399 | 3,446,995 | 4,825,793 | 17,234,975 | 24,128,965 | 120,644,825 |
| -1 | -5 | -7 | -25 | -35 | -175 | -227 | -1,135 | -1,589 | -3,037 | -5,675 | -7,945 | -15,185 | -21,259 | -39,725 | -75,925 | -106,295 | -531,475 | -689,399 | -3,446,995 | -4,825,793 | -17,234,975 | -24,128,965 | -120,644,825 |
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