A:
Positive:
1 x 3115144455 x 6230288911 x 2831949555 x 5663899113 x 2756765565 x 5513531243 x 2506156215 x 50123
Negative:
-1 x -311514445-5 x -62302889-11 x -28319495-55 x -5663899-113 x -2756765-565 x -551353-1243 x -250615-6215 x -50123
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 311,514,445, 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 | 311,514,445 | |
| -1 | -311,514,445 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 311,514,445.
Example:
1 x 311,514,445 = 311,514,445
and
-1 x -311,514,445 = 311,514,445
Notice both answers equal 311,514,445
With that explanation out of the way, let's continue. Next, we take the number 311,514,445 and divide it by 2:
311,514,445 ÷ 2 = 155,757,222.5
If the quotient is a whole number, then 2 and 155,757,222.5 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 | 311,514,445 | |
| -1 | -311,514,445 |
Now, we try dividing 311,514,445 by 3:
311,514,445 ÷ 3 = 103,838,148.3333
If the quotient is a whole number, then 3 and 103,838,148.3333 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 | 311,514,445 | |
| -1 | -311,514,445 |
Let's try dividing by 4:
311,514,445 ÷ 4 = 77,878,611.25
If the quotient is a whole number, then 4 and 77,878,611.25 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 | 311,514,445 | |
| -1 | 311,514,445 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 113 | 565 | 1,243 | 6,215 | 50,123 | 250,615 | 551,353 | 2,756,765 | 5,663,899 | 28,319,495 | 62,302,889 | 311,514,445 |
| -1 | -5 | -11 | -55 | -113 | -565 | -1,243 | -6,215 | -50,123 | -250,615 | -551,353 | -2,756,765 | -5,663,899 | -28,319,495 | -62,302,889 | -311,514,445 |
Here are some more numbers to try:
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