A:
Positive:
1 x 154311355 x 308622719 x 81216595 x 162433127 x 121505635 x 243011279 x 120652413 x 6395
Negative:
-1 x -15431135-5 x -3086227-19 x -812165-95 x -162433-127 x -121505-635 x -24301-1279 x -12065-2413 x -6395
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 15,431,135, 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 | 15,431,135 | |
| -1 | -15,431,135 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,431,135.
Example:
1 x 15,431,135 = 15,431,135
and
-1 x -15,431,135 = 15,431,135
Notice both answers equal 15,431,135
With that explanation out of the way, let's continue. Next, we take the number 15,431,135 and divide it by 2:
15,431,135 ÷ 2 = 7,715,567.5
If the quotient is a whole number, then 2 and 7,715,567.5 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 | 15,431,135 | |
| -1 | -15,431,135 |
Now, we try dividing 15,431,135 by 3:
15,431,135 ÷ 3 = 5,143,711.6667
If the quotient is a whole number, then 3 and 5,143,711.6667 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 | 15,431,135 | |
| -1 | -15,431,135 |
Let's try dividing by 4:
15,431,135 ÷ 4 = 3,857,783.75
If the quotient is a whole number, then 4 and 3,857,783.75 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 | 15,431,135 | |
| -1 | 15,431,135 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 127 | 635 | 1,279 | 2,413 | 6,395 | 12,065 | 24,301 | 121,505 | 162,433 | 812,165 | 3,086,227 | 15,431,135 |
| -1 | -5 | -19 | -95 | -127 | -635 | -1,279 | -2,413 | -6,395 | -12,065 | -24,301 | -121,505 | -162,433 | -812,165 | -3,086,227 | -15,431,135 |
Here are some more numbers to try:
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