A:
Positive:
1 x 21652639323 x 941419161 x 3549613157 x 1379149983 x 2202711403 x 1543313611 x 599639577 x 22609
Negative:
-1 x -216526393-23 x -9414191-61 x -3549613-157 x -1379149-983 x -220271-1403 x -154331-3611 x -59963-9577 x -22609
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 216,526,393, 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 | 216,526,393 | |
| -1 | -216,526,393 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 216,526,393.
Example:
1 x 216,526,393 = 216,526,393
and
-1 x -216,526,393 = 216,526,393
Notice both answers equal 216,526,393
With that explanation out of the way, let's continue. Next, we take the number 216,526,393 and divide it by 2:
216,526,393 ÷ 2 = 108,263,196.5
If the quotient is a whole number, then 2 and 108,263,196.5 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 | 216,526,393 | |
| -1 | -216,526,393 |
Now, we try dividing 216,526,393 by 3:
216,526,393 ÷ 3 = 72,175,464.3333
If the quotient is a whole number, then 3 and 72,175,464.3333 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 | 216,526,393 | |
| -1 | -216,526,393 |
Let's try dividing by 4:
216,526,393 ÷ 4 = 54,131,598.25
If the quotient is a whole number, then 4 and 54,131,598.25 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 | 216,526,393 | |
| -1 | 216,526,393 |
If you did it right, you will end up with this table:
| 1 | 23 | 61 | 157 | 983 | 1,403 | 3,611 | 9,577 | 22,609 | 59,963 | 154,331 | 220,271 | 1,379,149 | 3,549,613 | 9,414,191 | 216,526,393 |
| -1 | -23 | -61 | -157 | -983 | -1,403 | -3,611 | -9,577 | -22,609 | -59,963 | -154,331 | -220,271 | -1,379,149 | -3,549,613 | -9,414,191 | -216,526,393 |
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