A:
Positive:
1 x 1201103055 x 240220617 x 1715861519 x 632159535 x 343172395 x 1264319133 x 903085665 x 180617
Negative:
-1 x -120110305-5 x -24022061-7 x -17158615-19 x -6321595-35 x -3431723-95 x -1264319-133 x -903085-665 x -180617
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 120,110,305, 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 | 120,110,305 | |
| -1 | -120,110,305 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,110,305.
Example:
1 x 120,110,305 = 120,110,305
and
-1 x -120,110,305 = 120,110,305
Notice both answers equal 120,110,305
With that explanation out of the way, let's continue. Next, we take the number 120,110,305 and divide it by 2:
120,110,305 ÷ 2 = 60,055,152.5
If the quotient is a whole number, then 2 and 60,055,152.5 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 | 120,110,305 | |
| -1 | -120,110,305 |
Now, we try dividing 120,110,305 by 3:
120,110,305 ÷ 3 = 40,036,768.3333
If the quotient is a whole number, then 3 and 40,036,768.3333 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 | 120,110,305 | |
| -1 | -120,110,305 |
Let's try dividing by 4:
120,110,305 ÷ 4 = 30,027,576.25
If the quotient is a whole number, then 4 and 30,027,576.25 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 | 120,110,305 | |
| -1 | 120,110,305 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 19 | 35 | 95 | 133 | 665 | 180,617 | 903,085 | 1,264,319 | 3,431,723 | 6,321,595 | 17,158,615 | 24,022,061 | 120,110,305 |
| -1 | -5 | -7 | -19 | -35 | -95 | -133 | -665 | -180,617 | -903,085 | -1,264,319 | -3,431,723 | -6,321,595 | -17,158,615 | -24,022,061 | -120,110,305 |
Here are some more numbers to try:
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