A:
Positive:
1 x 2431404055 x 48628081113 x 2151685157 x 1548665565 x 430337785 x 3097332741 x 8870513705 x 17741
Negative:
-1 x -243140405-5 x -48628081-113 x -2151685-157 x -1548665-565 x -430337-785 x -309733-2741 x -88705-13705 x -17741
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 243,140,405, 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 | 243,140,405 | |
| -1 | -243,140,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 243,140,405.
Example:
1 x 243,140,405 = 243,140,405
and
-1 x -243,140,405 = 243,140,405
Notice both answers equal 243,140,405
With that explanation out of the way, let's continue. Next, we take the number 243,140,405 and divide it by 2:
243,140,405 ÷ 2 = 121,570,202.5
If the quotient is a whole number, then 2 and 121,570,202.5 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 | 243,140,405 | |
| -1 | -243,140,405 |
Now, we try dividing 243,140,405 by 3:
243,140,405 ÷ 3 = 81,046,801.6667
If the quotient is a whole number, then 3 and 81,046,801.6667 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 | 243,140,405 | |
| -1 | -243,140,405 |
Let's try dividing by 4:
243,140,405 ÷ 4 = 60,785,101.25
If the quotient is a whole number, then 4 and 60,785,101.25 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 | 243,140,405 | |
| -1 | 243,140,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 113 | 157 | 565 | 785 | 2,741 | 13,705 | 17,741 | 88,705 | 309,733 | 430,337 | 1,548,665 | 2,151,685 | 48,628,081 | 243,140,405 |
| -1 | -5 | -113 | -157 | -565 | -785 | -2,741 | -13,705 | -17,741 | -88,705 | -309,733 | -430,337 | -1,548,665 | -2,151,685 | -48,628,081 | -243,140,405 |
Here are some more numbers to try:
Try the factor calculator