A:
Positive:
1 x 1505307655 x 301061537 x 2150439511 x 1368461535 x 430087955 x 273692377 x 1954945385 x 390989
Negative:
-1 x -150530765-5 x -30106153-7 x -21504395-11 x -13684615-35 x -4300879-55 x -2736923-77 x -1954945-385 x -390989
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 150,530,765, 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 | 150,530,765 | |
| -1 | -150,530,765 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 150,530,765.
Example:
1 x 150,530,765 = 150,530,765
and
-1 x -150,530,765 = 150,530,765
Notice both answers equal 150,530,765
With that explanation out of the way, let's continue. Next, we take the number 150,530,765 and divide it by 2:
150,530,765 ÷ 2 = 75,265,382.5
If the quotient is a whole number, then 2 and 75,265,382.5 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 | 150,530,765 | |
| -1 | -150,530,765 |
Now, we try dividing 150,530,765 by 3:
150,530,765 ÷ 3 = 50,176,921.6667
If the quotient is a whole number, then 3 and 50,176,921.6667 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 | 150,530,765 | |
| -1 | -150,530,765 |
Let's try dividing by 4:
150,530,765 ÷ 4 = 37,632,691.25
If the quotient is a whole number, then 4 and 37,632,691.25 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 | 150,530,765 | |
| -1 | 150,530,765 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 385 | 390,989 | 1,954,945 | 2,736,923 | 4,300,879 | 13,684,615 | 21,504,395 | 30,106,153 | 150,530,765 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -385 | -390,989 | -1,954,945 | -2,736,923 | -4,300,879 | -13,684,615 | -21,504,395 | -30,106,153 | -150,530,765 |
Here are some more numbers to try:
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