A:
Positive:
1 x 31514024311 x 2864911379 x 3989117193 x 1632851869 x 3626471879 x 1677172123 x 14844115247 x 20669
Negative:
-1 x -315140243-11 x -28649113-79 x -3989117-193 x -1632851-869 x -362647-1879 x -167717-2123 x -148441-15247 x -20669
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 315,140,243, 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 | 315,140,243 | |
| -1 | -315,140,243 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 315,140,243.
Example:
1 x 315,140,243 = 315,140,243
and
-1 x -315,140,243 = 315,140,243
Notice both answers equal 315,140,243
With that explanation out of the way, let's continue. Next, we take the number 315,140,243 and divide it by 2:
315,140,243 ÷ 2 = 157,570,121.5
If the quotient is a whole number, then 2 and 157,570,121.5 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 | 315,140,243 | |
| -1 | -315,140,243 |
Now, we try dividing 315,140,243 by 3:
315,140,243 ÷ 3 = 105,046,747.6667
If the quotient is a whole number, then 3 and 105,046,747.6667 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 | 315,140,243 | |
| -1 | -315,140,243 |
Let's try dividing by 4:
315,140,243 ÷ 4 = 78,785,060.75
If the quotient is a whole number, then 4 and 78,785,060.75 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 | 315,140,243 | |
| -1 | 315,140,243 |
If you did it right, you will end up with this table:
| 1 | 11 | 79 | 193 | 869 | 1,879 | 2,123 | 15,247 | 20,669 | 148,441 | 167,717 | 362,647 | 1,632,851 | 3,989,117 | 28,649,113 | 315,140,243 |
| -1 | -11 | -79 | -193 | -869 | -1,879 | -2,123 | -15,247 | -20,669 | -148,441 | -167,717 | -362,647 | -1,632,851 | -3,989,117 | -28,649,113 | -315,140,243 |
Here are some more numbers to try:
Try the factor calculator