A:
Positive:
1 x 2434321455 x 4868642911 x 2213019555 x 4426039809 x 3009054045 x 601815471 x 444958899 x 27355
Negative:
-1 x -243432145-5 x -48686429-11 x -22130195-55 x -4426039-809 x -300905-4045 x -60181-5471 x -44495-8899 x -27355
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 243,432,145, 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 | 243,432,145 | |
| -1 | -243,432,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 243,432,145.
Example:
1 x 243,432,145 = 243,432,145
and
-1 x -243,432,145 = 243,432,145
Notice both answers equal 243,432,145
With that explanation out of the way, let's continue. Next, we take the number 243,432,145 and divide it by 2:
243,432,145 ÷ 2 = 121,716,072.5
If the quotient is a whole number, then 2 and 121,716,072.5 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 | 243,432,145 | |
| -1 | -243,432,145 |
Now, we try dividing 243,432,145 by 3:
243,432,145 ÷ 3 = 81,144,048.3333
If the quotient is a whole number, then 3 and 81,144,048.3333 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 | 243,432,145 | |
| -1 | -243,432,145 |
Let's try dividing by 4:
243,432,145 ÷ 4 = 60,858,036.25
If the quotient is a whole number, then 4 and 60,858,036.25 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 | 243,432,145 | |
| -1 | 243,432,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 809 | 4,045 | 5,471 | 8,899 | 27,355 | 44,495 | 60,181 | 300,905 | 4,426,039 | 22,130,195 | 48,686,429 | 243,432,145 |
| -1 | -5 | -11 | -55 | -809 | -4,045 | -5,471 | -8,899 | -27,355 | -44,495 | -60,181 | -300,905 | -4,426,039 | -22,130,195 | -48,686,429 | -243,432,145 |
Here are some more numbers to try:
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