A:
Positive:
1 x 511212355 x 1022424711 x 464738537 x 138165555 x 929477185 x 276331407 x 1256052035 x 25121
Negative:
-1 x -51121235-5 x -10224247-11 x -4647385-37 x -1381655-55 x -929477-185 x -276331-407 x -125605-2035 x -25121
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 51,121,235, 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 | 51,121,235 | |
| -1 | -51,121,235 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,121,235.
Example:
1 x 51,121,235 = 51,121,235
and
-1 x -51,121,235 = 51,121,235
Notice both answers equal 51,121,235
With that explanation out of the way, let's continue. Next, we take the number 51,121,235 and divide it by 2:
51,121,235 ÷ 2 = 25,560,617.5
If the quotient is a whole number, then 2 and 25,560,617.5 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 | 51,121,235 | |
| -1 | -51,121,235 |
Now, we try dividing 51,121,235 by 3:
51,121,235 ÷ 3 = 17,040,411.6667
If the quotient is a whole number, then 3 and 17,040,411.6667 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 | 51,121,235 | |
| -1 | -51,121,235 |
Let's try dividing by 4:
51,121,235 ÷ 4 = 12,780,308.75
If the quotient is a whole number, then 4 and 12,780,308.75 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 | 51,121,235 | |
| -1 | 51,121,235 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 37 | 55 | 185 | 407 | 2,035 | 25,121 | 125,605 | 276,331 | 929,477 | 1,381,655 | 4,647,385 | 10,224,247 | 51,121,235 |
| -1 | -5 | -11 | -37 | -55 | -185 | -407 | -2,035 | -25,121 | -125,605 | -276,331 | -929,477 | -1,381,655 | -4,647,385 | -10,224,247 | -51,121,235 |
Here are some more numbers to try:
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