A:
Positive:
1 x 512857155 x 1025714313 x 394505553 x 96765565 x 789011265 x 193531689 x 744353445 x 14887
Negative:
-1 x -51285715-5 x -10257143-13 x -3945055-53 x -967655-65 x -789011-265 x -193531-689 x -74435-3445 x -14887
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 51,285,715, 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 | 51,285,715 | |
| -1 | -51,285,715 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,285,715.
Example:
1 x 51,285,715 = 51,285,715
and
-1 x -51,285,715 = 51,285,715
Notice both answers equal 51,285,715
With that explanation out of the way, let's continue. Next, we take the number 51,285,715 and divide it by 2:
51,285,715 ÷ 2 = 25,642,857.5
If the quotient is a whole number, then 2 and 25,642,857.5 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 | 51,285,715 | |
| -1 | -51,285,715 |
Now, we try dividing 51,285,715 by 3:
51,285,715 ÷ 3 = 17,095,238.3333
If the quotient is a whole number, then 3 and 17,095,238.3333 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 | 51,285,715 | |
| -1 | -51,285,715 |
Let's try dividing by 4:
51,285,715 ÷ 4 = 12,821,428.75
If the quotient is a whole number, then 4 and 12,821,428.75 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 | 51,285,715 | |
| -1 | 51,285,715 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 53 | 65 | 265 | 689 | 3,445 | 14,887 | 74,435 | 193,531 | 789,011 | 967,655 | 3,945,055 | 10,257,143 | 51,285,715 |
| -1 | -5 | -13 | -53 | -65 | -265 | -689 | -3,445 | -14,887 | -74,435 | -193,531 | -789,011 | -967,655 | -3,945,055 | -10,257,143 | -51,285,715 |
Here are some more numbers to try:
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