A:
Positive:
1 x 21126505123 x 9185437103 x 2051117257 x 822043347 x 6088332369 x 891795911 x 357417981 x 26471
Negative:
-1 x -211265051-23 x -9185437-103 x -2051117-257 x -822043-347 x -608833-2369 x -89179-5911 x -35741-7981 x -26471
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 211,265,051, 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 | 211,265,051 | |
| -1 | -211,265,051 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 211,265,051.
Example:
1 x 211,265,051 = 211,265,051
and
-1 x -211,265,051 = 211,265,051
Notice both answers equal 211,265,051
With that explanation out of the way, let's continue. Next, we take the number 211,265,051 and divide it by 2:
211,265,051 ÷ 2 = 105,632,525.5
If the quotient is a whole number, then 2 and 105,632,525.5 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 | 211,265,051 | |
| -1 | -211,265,051 |
Now, we try dividing 211,265,051 by 3:
211,265,051 ÷ 3 = 70,421,683.6667
If the quotient is a whole number, then 3 and 70,421,683.6667 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 | 211,265,051 | |
| -1 | -211,265,051 |
Let's try dividing by 4:
211,265,051 ÷ 4 = 52,816,262.75
If the quotient is a whole number, then 4 and 52,816,262.75 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 | 211,265,051 | |
| -1 | 211,265,051 |
If you did it right, you will end up with this table:
| 1 | 23 | 103 | 257 | 347 | 2,369 | 5,911 | 7,981 | 26,471 | 35,741 | 89,179 | 608,833 | 822,043 | 2,051,117 | 9,185,437 | 211,265,051 |
| -1 | -23 | -103 | -257 | -347 | -2,369 | -5,911 | -7,981 | -26,471 | -35,741 | -89,179 | -608,833 | -822,043 | -2,051,117 | -9,185,437 | -211,265,051 |
Here are some more numbers to try:
Try the factor calculator