A:
Positive:
1 x 5121103911 x 465554931 x 165196979 x 648241341 x 150179869 x 589311901 x 269392449 x 20911
Negative:
-1 x -51211039-11 x -4655549-31 x -1651969-79 x -648241-341 x -150179-869 x -58931-1901 x -26939-2449 x -20911
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 51,211,039, 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 | 51,211,039 | |
| -1 | -51,211,039 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,211,039.
Example:
1 x 51,211,039 = 51,211,039
and
-1 x -51,211,039 = 51,211,039
Notice both answers equal 51,211,039
With that explanation out of the way, let's continue. Next, we take the number 51,211,039 and divide it by 2:
51,211,039 ÷ 2 = 25,605,519.5
If the quotient is a whole number, then 2 and 25,605,519.5 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 | 51,211,039 | |
| -1 | -51,211,039 |
Now, we try dividing 51,211,039 by 3:
51,211,039 ÷ 3 = 17,070,346.3333
If the quotient is a whole number, then 3 and 17,070,346.3333 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 | 51,211,039 | |
| -1 | -51,211,039 |
Let's try dividing by 4:
51,211,039 ÷ 4 = 12,802,759.75
If the quotient is a whole number, then 4 and 12,802,759.75 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 | 51,211,039 | |
| -1 | 51,211,039 |
If you did it right, you will end up with this table:
| 1 | 11 | 31 | 79 | 341 | 869 | 1,901 | 2,449 | 20,911 | 26,939 | 58,931 | 150,179 | 648,241 | 1,651,969 | 4,655,549 | 51,211,039 |
| -1 | -11 | -31 | -79 | -341 | -869 | -1,901 | -2,449 | -20,911 | -26,939 | -58,931 | -150,179 | -648,241 | -1,651,969 | -4,655,549 | -51,211,039 |
Here are some more numbers to try:
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