A:
Positive:
1 x 25184562711 x 2289505719 x 13255033209 x 1205003661 x 3810071823 x 1381497271 x 3463712559 x 20053
Negative:
-1 x -251845627-11 x -22895057-19 x -13255033-209 x -1205003-661 x -381007-1823 x -138149-7271 x -34637-12559 x -20053
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 251,845,627, 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 | 251,845,627 | |
| -1 | -251,845,627 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 251,845,627.
Example:
1 x 251,845,627 = 251,845,627
and
-1 x -251,845,627 = 251,845,627
Notice both answers equal 251,845,627
With that explanation out of the way, let's continue. Next, we take the number 251,845,627 and divide it by 2:
251,845,627 ÷ 2 = 125,922,813.5
If the quotient is a whole number, then 2 and 125,922,813.5 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 | 251,845,627 | |
| -1 | -251,845,627 |
Now, we try dividing 251,845,627 by 3:
251,845,627 ÷ 3 = 83,948,542.3333
If the quotient is a whole number, then 3 and 83,948,542.3333 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 | 251,845,627 | |
| -1 | -251,845,627 |
Let's try dividing by 4:
251,845,627 ÷ 4 = 62,961,406.75
If the quotient is a whole number, then 4 and 62,961,406.75 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 | 251,845,627 | |
| -1 | 251,845,627 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 209 | 661 | 1,823 | 7,271 | 12,559 | 20,053 | 34,637 | 138,149 | 381,007 | 1,205,003 | 13,255,033 | 22,895,057 | 251,845,627 |
| -1 | -11 | -19 | -209 | -661 | -1,823 | -7,271 | -12,559 | -20,053 | -34,637 | -138,149 | -381,007 | -1,205,003 | -13,255,033 | -22,895,057 | -251,845,627 |
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