A:
Positive:
1 x 31154355713 x 2396488943 x 7245199169 x 1843453559 x 557323997 x 3124811849 x 1684937267 x 4287112961 x 24037
Negative:
-1 x -311543557-13 x -23964889-43 x -7245199-169 x -1843453-559 x -557323-997 x -312481-1849 x -168493-7267 x -42871-12961 x -24037
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 311,543,557, 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 | 311,543,557 | |
| -1 | -311,543,557 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 311,543,557.
Example:
1 x 311,543,557 = 311,543,557
and
-1 x -311,543,557 = 311,543,557
Notice both answers equal 311,543,557
With that explanation out of the way, let's continue. Next, we take the number 311,543,557 and divide it by 2:
311,543,557 ÷ 2 = 155,771,778.5
If the quotient is a whole number, then 2 and 155,771,778.5 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 | 311,543,557 | |
| -1 | -311,543,557 |
Now, we try dividing 311,543,557 by 3:
311,543,557 ÷ 3 = 103,847,852.3333
If the quotient is a whole number, then 3 and 103,847,852.3333 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 | 311,543,557 | |
| -1 | -311,543,557 |
Let's try dividing by 4:
311,543,557 ÷ 4 = 77,885,889.25
If the quotient is a whole number, then 4 and 77,885,889.25 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 | 311,543,557 | |
| -1 | 311,543,557 |
If you did it right, you will end up with this table:
| 1 | 13 | 43 | 169 | 559 | 997 | 1,849 | 7,267 | 12,961 | 24,037 | 42,871 | 168,493 | 312,481 | 557,323 | 1,843,453 | 7,245,199 | 23,964,889 | 311,543,557 |
| -1 | -13 | -43 | -169 | -559 | -997 | -1,849 | -7,267 | -12,961 | -24,037 | -42,871 | -168,493 | -312,481 | -557,323 | -1,843,453 | -7,245,199 | -23,964,889 | -311,543,557 |
Here are some more numbers to try:
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