A:
Positive:
1 x 3214232455 x 6428464911 x 2922029513 x 2472486555 x 584405965 x 4944973143 x 2247715715 x 449543
Negative:
-1 x -321423245-5 x -64284649-11 x -29220295-13 x -24724865-55 x -5844059-65 x -4944973-143 x -2247715-715 x -449543
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 321,423,245, 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 | 321,423,245 | |
| -1 | -321,423,245 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 321,423,245.
Example:
1 x 321,423,245 = 321,423,245
and
-1 x -321,423,245 = 321,423,245
Notice both answers equal 321,423,245
With that explanation out of the way, let's continue. Next, we take the number 321,423,245 and divide it by 2:
321,423,245 ÷ 2 = 160,711,622.5
If the quotient is a whole number, then 2 and 160,711,622.5 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 | 321,423,245 | |
| -1 | -321,423,245 |
Now, we try dividing 321,423,245 by 3:
321,423,245 ÷ 3 = 107,141,081.6667
If the quotient is a whole number, then 3 and 107,141,081.6667 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 | 321,423,245 | |
| -1 | -321,423,245 |
Let's try dividing by 4:
321,423,245 ÷ 4 = 80,355,811.25
If the quotient is a whole number, then 4 and 80,355,811.25 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 | 321,423,245 | |
| -1 | 321,423,245 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 13 | 55 | 65 | 143 | 715 | 449,543 | 2,247,715 | 4,944,973 | 5,844,059 | 24,724,865 | 29,220,295 | 64,284,649 | 321,423,245 |
| -1 | -5 | -11 | -13 | -55 | -65 | -143 | -715 | -449,543 | -2,247,715 | -4,944,973 | -5,844,059 | -24,724,865 | -29,220,295 | -64,284,649 | -321,423,245 |
Here are some more numbers to try:
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