A:
Positive:
1 x 2188555 x 437717 x 3126513 x 1683535 x 625337 x 591565 x 336791 x 2405169 x 1295185 x 1183259 x 845455 x 481
Negative:
-1 x -218855-5 x -43771-7 x -31265-13 x -16835-35 x -6253-37 x -5915-65 x -3367-91 x -2405-169 x -1295-185 x -1183-259 x -845-455 x -481
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 218,855, 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 | 218,855 | |
| -1 | -218,855 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 218,855.
Example:
1 x 218,855 = 218,855
and
-1 x -218,855 = 218,855
Notice both answers equal 218,855
With that explanation out of the way, let's continue. Next, we take the number 218,855 and divide it by 2:
218,855 ÷ 2 = 109,427.5
If the quotient is a whole number, then 2 and 109,427.5 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 | 218,855 | |
| -1 | -218,855 |
Now, we try dividing 218,855 by 3:
218,855 ÷ 3 = 72,951.6667
If the quotient is a whole number, then 3 and 72,951.6667 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 | 218,855 | |
| -1 | -218,855 |
Let's try dividing by 4:
218,855 ÷ 4 = 54,713.75
If the quotient is a whole number, then 4 and 54,713.75 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 | 218,855 | |
| -1 | 218,855 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 13 | 35 | 37 | 65 | 91 | 169 | 185 | 259 | 455 | 481 | 845 | 1,183 | 1,295 | 2,405 | 3,367 | 5,915 | 6,253 | 16,835 | 31,265 | 43,771 | 218,855 |
| -1 | -5 | -7 | -13 | -35 | -37 | -65 | -91 | -169 | -185 | -259 | -455 | -481 | -845 | -1,183 | -1,295 | -2,405 | -3,367 | -5,915 | -6,253 | -16,835 | -31,265 | -43,771 | -218,855 |
Here are some more numbers to try:
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