A:
Positive:
1 x 5204051055 x 10408102111 x 4730955517 x 3061206555 x 946191185 x 6122413187 x 2782915935 x 556583
Negative:
-1 x -520405105-5 x -104081021-11 x -47309555-17 x -30612065-55 x -9461911-85 x -6122413-187 x -2782915-935 x -556583
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 520,405,105, 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 | 520,405,105 | |
| -1 | -520,405,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 520,405,105.
Example:
1 x 520,405,105 = 520,405,105
and
-1 x -520,405,105 = 520,405,105
Notice both answers equal 520,405,105
With that explanation out of the way, let's continue. Next, we take the number 520,405,105 and divide it by 2:
520,405,105 ÷ 2 = 260,202,552.5
If the quotient is a whole number, then 2 and 260,202,552.5 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 | 520,405,105 | |
| -1 | -520,405,105 |
Now, we try dividing 520,405,105 by 3:
520,405,105 ÷ 3 = 173,468,368.3333
If the quotient is a whole number, then 3 and 173,468,368.3333 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 | 520,405,105 | |
| -1 | -520,405,105 |
Let's try dividing by 4:
520,405,105 ÷ 4 = 130,101,276.25
If the quotient is a whole number, then 4 and 130,101,276.25 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 | 520,405,105 | |
| -1 | 520,405,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 17 | 55 | 85 | 187 | 935 | 556,583 | 2,782,915 | 6,122,413 | 9,461,911 | 30,612,065 | 47,309,555 | 104,081,021 | 520,405,105 |
| -1 | -5 | -11 | -17 | -55 | -85 | -187 | -935 | -556,583 | -2,782,915 | -6,122,413 | -9,461,911 | -30,612,065 | -47,309,555 | -104,081,021 | -520,405,105 |
Here are some more numbers to try:
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