A:
Positive:
1 x 5121051111 x 465550117 x 301238389 x 575399181 x 282931187 x 273853289 x 177199979 x 523091513 x 338471991 x 257213077 x 166433179 x 16109
Negative:
-1 x -51210511-11 x -4655501-17 x -3012383-89 x -575399-181 x -282931-187 x -273853-289 x -177199-979 x -52309-1513 x -33847-1991 x -25721-3077 x -16643-3179 x -16109
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 51,210,511, 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 | 51,210,511 | |
| -1 | -51,210,511 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,210,511.
Example:
1 x 51,210,511 = 51,210,511
and
-1 x -51,210,511 = 51,210,511
Notice both answers equal 51,210,511
With that explanation out of the way, let's continue. Next, we take the number 51,210,511 and divide it by 2:
51,210,511 ÷ 2 = 25,605,255.5
If the quotient is a whole number, then 2 and 25,605,255.5 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 | 51,210,511 | |
| -1 | -51,210,511 |
Now, we try dividing 51,210,511 by 3:
51,210,511 ÷ 3 = 17,070,170.3333
If the quotient is a whole number, then 3 and 17,070,170.3333 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 | 51,210,511 | |
| -1 | -51,210,511 |
Let's try dividing by 4:
51,210,511 ÷ 4 = 12,802,627.75
If the quotient is a whole number, then 4 and 12,802,627.75 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 | 51,210,511 | |
| -1 | 51,210,511 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 89 | 181 | 187 | 289 | 979 | 1,513 | 1,991 | 3,077 | 3,179 | 16,109 | 16,643 | 25,721 | 33,847 | 52,309 | 177,199 | 273,853 | 282,931 | 575,399 | 3,012,383 | 4,655,501 | 51,210,511 |
| -1 | -11 | -17 | -89 | -181 | -187 | -289 | -979 | -1,513 | -1,991 | -3,077 | -3,179 | -16,109 | -16,643 | -25,721 | -33,847 | -52,309 | -177,199 | -273,853 | -282,931 | -575,399 | -3,012,383 | -4,655,501 | -51,210,511 |
Here are some more numbers to try:
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