A:
Positive:
1 x 6124415055 x 12248830113 x 4711088565 x 9422177593 x 10327852965 x 2065577709 x 7944515889 x 38545
Negative:
-1 x -612441505-5 x -122488301-13 x -47110885-65 x -9422177-593 x -1032785-2965 x -206557-7709 x -79445-15889 x -38545
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 612,441,505, 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 | 612,441,505 | |
| -1 | -612,441,505 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 612,441,505.
Example:
1 x 612,441,505 = 612,441,505
and
-1 x -612,441,505 = 612,441,505
Notice both answers equal 612,441,505
With that explanation out of the way, let's continue. Next, we take the number 612,441,505 and divide it by 2:
612,441,505 ÷ 2 = 306,220,752.5
If the quotient is a whole number, then 2 and 306,220,752.5 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 | 612,441,505 | |
| -1 | -612,441,505 |
Now, we try dividing 612,441,505 by 3:
612,441,505 ÷ 3 = 204,147,168.3333
If the quotient is a whole number, then 3 and 204,147,168.3333 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 | 612,441,505 | |
| -1 | -612,441,505 |
Let's try dividing by 4:
612,441,505 ÷ 4 = 153,110,376.25
If the quotient is a whole number, then 4 and 153,110,376.25 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 | 612,441,505 | |
| -1 | 612,441,505 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 593 | 2,965 | 7,709 | 15,889 | 38,545 | 79,445 | 206,557 | 1,032,785 | 9,422,177 | 47,110,885 | 122,488,301 | 612,441,505 |
| -1 | -5 | -13 | -65 | -593 | -2,965 | -7,709 | -15,889 | -38,545 | -79,445 | -206,557 | -1,032,785 | -9,422,177 | -47,110,885 | -122,488,301 | -612,441,505 |
Here are some more numbers to try:
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