A:
Positive:
1 x 2434021455 x 486804297 x 3477173535 x 695434743 x 5660515215 x 1132103301 x 8086451505 x 161729
Negative:
-1 x -243402145-5 x -48680429-7 x -34771735-35 x -6954347-43 x -5660515-215 x -1132103-301 x -808645-1505 x -161729
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 243,402,145, 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 | 243,402,145 | |
| -1 | -243,402,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 243,402,145.
Example:
1 x 243,402,145 = 243,402,145
and
-1 x -243,402,145 = 243,402,145
Notice both answers equal 243,402,145
With that explanation out of the way, let's continue. Next, we take the number 243,402,145 and divide it by 2:
243,402,145 ÷ 2 = 121,701,072.5
If the quotient is a whole number, then 2 and 121,701,072.5 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 | 243,402,145 | |
| -1 | -243,402,145 |
Now, we try dividing 243,402,145 by 3:
243,402,145 ÷ 3 = 81,134,048.3333
If the quotient is a whole number, then 3 and 81,134,048.3333 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 | 243,402,145 | |
| -1 | -243,402,145 |
Let's try dividing by 4:
243,402,145 ÷ 4 = 60,850,536.25
If the quotient is a whole number, then 4 and 60,850,536.25 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 | 243,402,145 | |
| -1 | 243,402,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 43 | 215 | 301 | 1,505 | 161,729 | 808,645 | 1,132,103 | 5,660,515 | 6,954,347 | 34,771,735 | 48,680,429 | 243,402,145 |
| -1 | -5 | -7 | -35 | -43 | -215 | -301 | -1,505 | -161,729 | -808,645 | -1,132,103 | -5,660,515 | -6,954,347 | -34,771,735 | -48,680,429 | -243,402,145 |
Here are some more numbers to try:
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