A:
Positive:
1 x 3111254055 x 62225081103 x 3020635347 x 896615515 x 6041271735 x 1793231741 x 1787058705 x 35741
Negative:
-1 x -311125405-5 x -62225081-103 x -3020635-347 x -896615-515 x -604127-1735 x -179323-1741 x -178705-8705 x -35741
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 311,125,405, 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 | 311,125,405 | |
| -1 | -311,125,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 311,125,405.
Example:
1 x 311,125,405 = 311,125,405
and
-1 x -311,125,405 = 311,125,405
Notice both answers equal 311,125,405
With that explanation out of the way, let's continue. Next, we take the number 311,125,405 and divide it by 2:
311,125,405 ÷ 2 = 155,562,702.5
If the quotient is a whole number, then 2 and 155,562,702.5 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 | 311,125,405 | |
| -1 | -311,125,405 |
Now, we try dividing 311,125,405 by 3:
311,125,405 ÷ 3 = 103,708,468.3333
If the quotient is a whole number, then 3 and 103,708,468.3333 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 | 311,125,405 | |
| -1 | -311,125,405 |
Let's try dividing by 4:
311,125,405 ÷ 4 = 77,781,351.25
If the quotient is a whole number, then 4 and 77,781,351.25 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 | 311,125,405 | |
| -1 | 311,125,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 103 | 347 | 515 | 1,735 | 1,741 | 8,705 | 35,741 | 178,705 | 179,323 | 604,127 | 896,615 | 3,020,635 | 62,225,081 | 311,125,405 |
| -1 | -5 | -103 | -347 | -515 | -1,735 | -1,741 | -8,705 | -35,741 | -178,705 | -179,323 | -604,127 | -896,615 | -3,020,635 | -62,225,081 | -311,125,405 |
Here are some more numbers to try:
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