A:
Positive:
1 x 2112600555 x 42252011127 x 1663465443 x 476885635 x 332693751 x 2813052215 x 953773755 x 56261
Negative:
-1 x -211260055-5 x -42252011-127 x -1663465-443 x -476885-635 x -332693-751 x -281305-2215 x -95377-3755 x -56261
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 211,260,055, 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 | 211,260,055 | |
| -1 | -211,260,055 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 211,260,055.
Example:
1 x 211,260,055 = 211,260,055
and
-1 x -211,260,055 = 211,260,055
Notice both answers equal 211,260,055
With that explanation out of the way, let's continue. Next, we take the number 211,260,055 and divide it by 2:
211,260,055 ÷ 2 = 105,630,027.5
If the quotient is a whole number, then 2 and 105,630,027.5 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 | 211,260,055 | |
| -1 | -211,260,055 |
Now, we try dividing 211,260,055 by 3:
211,260,055 ÷ 3 = 70,420,018.3333
If the quotient is a whole number, then 3 and 70,420,018.3333 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 | 211,260,055 | |
| -1 | -211,260,055 |
Let's try dividing by 4:
211,260,055 ÷ 4 = 52,815,013.75
If the quotient is a whole number, then 4 and 52,815,013.75 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 | 211,260,055 | |
| -1 | 211,260,055 |
If you did it right, you will end up with this table:
| 1 | 5 | 127 | 443 | 635 | 751 | 2,215 | 3,755 | 56,261 | 95,377 | 281,305 | 332,693 | 476,885 | 1,663,465 | 42,252,011 | 211,260,055 |
| -1 | -5 | -127 | -443 | -635 | -751 | -2,215 | -3,755 | -56,261 | -95,377 | -281,305 | -332,693 | -476,885 | -1,663,465 | -42,252,011 | -211,260,055 |
Here are some more numbers to try:
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