A:
Positive:
1 x 2162777655 x 4325555311 x 1966161537 x 584534555 x 3932323185 x 1169069407 x 5313952035 x 106279
Negative:
-1 x -216277765-5 x -43255553-11 x -19661615-37 x -5845345-55 x -3932323-185 x -1169069-407 x -531395-2035 x -106279
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 216,277,765, 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 | 216,277,765 | |
| -1 | -216,277,765 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 216,277,765.
Example:
1 x 216,277,765 = 216,277,765
and
-1 x -216,277,765 = 216,277,765
Notice both answers equal 216,277,765
With that explanation out of the way, let's continue. Next, we take the number 216,277,765 and divide it by 2:
216,277,765 ÷ 2 = 108,138,882.5
If the quotient is a whole number, then 2 and 108,138,882.5 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 | 216,277,765 | |
| -1 | -216,277,765 |
Now, we try dividing 216,277,765 by 3:
216,277,765 ÷ 3 = 72,092,588.3333
If the quotient is a whole number, then 3 and 72,092,588.3333 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 | 216,277,765 | |
| -1 | -216,277,765 |
Let's try dividing by 4:
216,277,765 ÷ 4 = 54,069,441.25
If the quotient is a whole number, then 4 and 54,069,441.25 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 | 216,277,765 | |
| -1 | 216,277,765 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 37 | 55 | 185 | 407 | 2,035 | 106,279 | 531,395 | 1,169,069 | 3,932,323 | 5,845,345 | 19,661,615 | 43,255,553 | 216,277,765 |
| -1 | -5 | -11 | -37 | -55 | -185 | -407 | -2,035 | -106,279 | -531,395 | -1,169,069 | -3,932,323 | -5,845,345 | -19,661,615 | -43,255,553 | -216,277,765 |
Here are some more numbers to try:
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