A:
Positive:
1 x 25524151913 x 1963396317 x 15014207103 x 2478073221 x 11549391339 x 1906211751 x 14576911213 x 22763
Negative:
-1 x -255241519-13 x -19633963-17 x -15014207-103 x -2478073-221 x -1154939-1339 x -190621-1751 x -145769-11213 x -22763
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 255,241,519, 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 | 255,241,519 | |
| -1 | -255,241,519 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 255,241,519.
Example:
1 x 255,241,519 = 255,241,519
and
-1 x -255,241,519 = 255,241,519
Notice both answers equal 255,241,519
With that explanation out of the way, let's continue. Next, we take the number 255,241,519 and divide it by 2:
255,241,519 ÷ 2 = 127,620,759.5
If the quotient is a whole number, then 2 and 127,620,759.5 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 | 255,241,519 | |
| -1 | -255,241,519 |
Now, we try dividing 255,241,519 by 3:
255,241,519 ÷ 3 = 85,080,506.3333
If the quotient is a whole number, then 3 and 85,080,506.3333 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 | 255,241,519 | |
| -1 | -255,241,519 |
Let's try dividing by 4:
255,241,519 ÷ 4 = 63,810,379.75
If the quotient is a whole number, then 4 and 63,810,379.75 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 | 255,241,519 | |
| -1 | 255,241,519 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 103 | 221 | 1,339 | 1,751 | 11,213 | 22,763 | 145,769 | 190,621 | 1,154,939 | 2,478,073 | 15,014,207 | 19,633,963 | 255,241,519 |
| -1 | -13 | -17 | -103 | -221 | -1,339 | -1,751 | -11,213 | -22,763 | -145,769 | -190,621 | -1,154,939 | -2,478,073 | -15,014,207 | -19,633,963 | -255,241,519 |
Here are some more numbers to try:
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