A:
Positive:
1 x 2431020055 x 4862040143 x 5653535181 x 1343105215 x 1130707905 x 2686216247 x 389157783 x 31235
Negative:
-1 x -243102005-5 x -48620401-43 x -5653535-181 x -1343105-215 x -1130707-905 x -268621-6247 x -38915-7783 x -31235
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 243,102,005, 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 | 243,102,005 | |
| -1 | -243,102,005 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 243,102,005.
Example:
1 x 243,102,005 = 243,102,005
and
-1 x -243,102,005 = 243,102,005
Notice both answers equal 243,102,005
With that explanation out of the way, let's continue. Next, we take the number 243,102,005 and divide it by 2:
243,102,005 ÷ 2 = 121,551,002.5
If the quotient is a whole number, then 2 and 121,551,002.5 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 | 243,102,005 | |
| -1 | -243,102,005 |
Now, we try dividing 243,102,005 by 3:
243,102,005 ÷ 3 = 81,034,001.6667
If the quotient is a whole number, then 3 and 81,034,001.6667 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 | 243,102,005 | |
| -1 | -243,102,005 |
Let's try dividing by 4:
243,102,005 ÷ 4 = 60,775,501.25
If the quotient is a whole number, then 4 and 60,775,501.25 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 | 243,102,005 | |
| -1 | 243,102,005 |
If you did it right, you will end up with this table:
| 1 | 5 | 43 | 181 | 215 | 905 | 6,247 | 7,783 | 31,235 | 38,915 | 268,621 | 1,130,707 | 1,343,105 | 5,653,535 | 48,620,401 | 243,102,005 |
| -1 | -5 | -43 | -181 | -215 | -905 | -6,247 | -7,783 | -31,235 | -38,915 | -268,621 | -1,130,707 | -1,343,105 | -5,653,535 | -48,620,401 | -243,102,005 |
Here are some more numbers to try:
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