A:
Positive:
1 x 1234344055 x 2468688131 x 398175537 x 3336065155 x 796351185 x 6672131147 x 1076155735 x 21523
Negative:
-1 x -123434405-5 x -24686881-31 x -3981755-37 x -3336065-155 x -796351-185 x -667213-1147 x -107615-5735 x -21523
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 123,434,405, 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 | 123,434,405 | |
| -1 | -123,434,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 123,434,405.
Example:
1 x 123,434,405 = 123,434,405
and
-1 x -123,434,405 = 123,434,405
Notice both answers equal 123,434,405
With that explanation out of the way, let's continue. Next, we take the number 123,434,405 and divide it by 2:
123,434,405 ÷ 2 = 61,717,202.5
If the quotient is a whole number, then 2 and 61,717,202.5 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 | 123,434,405 | |
| -1 | -123,434,405 |
Now, we try dividing 123,434,405 by 3:
123,434,405 ÷ 3 = 41,144,801.6667
If the quotient is a whole number, then 3 and 41,144,801.6667 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 | 123,434,405 | |
| -1 | -123,434,405 |
Let's try dividing by 4:
123,434,405 ÷ 4 = 30,858,601.25
If the quotient is a whole number, then 4 and 30,858,601.25 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 | 123,434,405 | |
| -1 | 123,434,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 37 | 155 | 185 | 1,147 | 5,735 | 21,523 | 107,615 | 667,213 | 796,351 | 3,336,065 | 3,981,755 | 24,686,881 | 123,434,405 |
| -1 | -5 | -31 | -37 | -155 | -185 | -1,147 | -5,735 | -21,523 | -107,615 | -667,213 | -796,351 | -3,336,065 | -3,981,755 | -24,686,881 | -123,434,405 |
Here are some more numbers to try:
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