A:
Positive:
1 x 5208876255 x 10417752525 x 20835505113 x 4609625125 x 4167101565 x 9219252825 x 18438514125 x 36877
Negative:
-1 x -520887625-5 x -104177525-25 x -20835505-113 x -4609625-125 x -4167101-565 x -921925-2825 x -184385-14125 x -36877
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 520,887,625, 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 | 520,887,625 | |
| -1 | -520,887,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 520,887,625.
Example:
1 x 520,887,625 = 520,887,625
and
-1 x -520,887,625 = 520,887,625
Notice both answers equal 520,887,625
With that explanation out of the way, let's continue. Next, we take the number 520,887,625 and divide it by 2:
520,887,625 ÷ 2 = 260,443,812.5
If the quotient is a whole number, then 2 and 260,443,812.5 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 | 520,887,625 | |
| -1 | -520,887,625 |
Now, we try dividing 520,887,625 by 3:
520,887,625 ÷ 3 = 173,629,208.3333
If the quotient is a whole number, then 3 and 173,629,208.3333 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 | 520,887,625 | |
| -1 | -520,887,625 |
Let's try dividing by 4:
520,887,625 ÷ 4 = 130,221,906.25
If the quotient is a whole number, then 4 and 130,221,906.25 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 | 520,887,625 | |
| -1 | 520,887,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 113 | 125 | 565 | 2,825 | 14,125 | 36,877 | 184,385 | 921,925 | 4,167,101 | 4,609,625 | 20,835,505 | 104,177,525 | 520,887,625 |
| -1 | -5 | -25 | -113 | -125 | -565 | -2,825 | -14,125 | -36,877 | -184,385 | -921,925 | -4,167,101 | -4,609,625 | -20,835,505 | -104,177,525 | -520,887,625 |
Here are some more numbers to try:
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