A:
Positive:
1 x 25151003911 x 2286454973 x 344534397 x 2592887803 x 3132131067 x 2357173229 x 778917081 x 35519
Negative:
-1 x -251510039-11 x -22864549-73 x -3445343-97 x -2592887-803 x -313213-1067 x -235717-3229 x -77891-7081 x -35519
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 251,510,039, 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 | 251,510,039 | |
| -1 | -251,510,039 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 251,510,039.
Example:
1 x 251,510,039 = 251,510,039
and
-1 x -251,510,039 = 251,510,039
Notice both answers equal 251,510,039
With that explanation out of the way, let's continue. Next, we take the number 251,510,039 and divide it by 2:
251,510,039 ÷ 2 = 125,755,019.5
If the quotient is a whole number, then 2 and 125,755,019.5 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 | 251,510,039 | |
| -1 | -251,510,039 |
Now, we try dividing 251,510,039 by 3:
251,510,039 ÷ 3 = 83,836,679.6667
If the quotient is a whole number, then 3 and 83,836,679.6667 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 | 251,510,039 | |
| -1 | -251,510,039 |
Let's try dividing by 4:
251,510,039 ÷ 4 = 62,877,509.75
If the quotient is a whole number, then 4 and 62,877,509.75 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 | 251,510,039 | |
| -1 | 251,510,039 |
If you did it right, you will end up with this table:
| 1 | 11 | 73 | 97 | 803 | 1,067 | 3,229 | 7,081 | 35,519 | 77,891 | 235,717 | 313,213 | 2,592,887 | 3,445,343 | 22,864,549 | 251,510,039 |
| -1 | -11 | -73 | -97 | -803 | -1,067 | -3,229 | -7,081 | -35,519 | -77,891 | -235,717 | -313,213 | -2,592,887 | -3,445,343 | -22,864,549 | -251,510,039 |
Here are some more numbers to try:
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