A:
Positive:
1 x 6165046555 x 12330093113 x 4742343565 x 94846871993 x 3093354759 x 1295459965 x 6186723795 x 25909
Negative:
-1 x -616504655-5 x -123300931-13 x -47423435-65 x -9484687-1993 x -309335-4759 x -129545-9965 x -61867-23795 x -25909
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 616,504,655, 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 | 616,504,655 | |
| -1 | -616,504,655 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 616,504,655.
Example:
1 x 616,504,655 = 616,504,655
and
-1 x -616,504,655 = 616,504,655
Notice both answers equal 616,504,655
With that explanation out of the way, let's continue. Next, we take the number 616,504,655 and divide it by 2:
616,504,655 ÷ 2 = 308,252,327.5
If the quotient is a whole number, then 2 and 308,252,327.5 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 | 616,504,655 | |
| -1 | -616,504,655 |
Now, we try dividing 616,504,655 by 3:
616,504,655 ÷ 3 = 205,501,551.6667
If the quotient is a whole number, then 3 and 205,501,551.6667 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 | 616,504,655 | |
| -1 | -616,504,655 |
Let's try dividing by 4:
616,504,655 ÷ 4 = 154,126,163.75
If the quotient is a whole number, then 4 and 154,126,163.75 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 | 616,504,655 | |
| -1 | 616,504,655 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 1,993 | 4,759 | 9,965 | 23,795 | 25,909 | 61,867 | 129,545 | 309,335 | 9,484,687 | 47,423,435 | 123,300,931 | 616,504,655 |
| -1 | -5 | -13 | -65 | -1,993 | -4,759 | -9,965 | -23,795 | -25,909 | -61,867 | -129,545 | -309,335 | -9,484,687 | -47,423,435 | -123,300,931 | -616,504,655 |
Here are some more numbers to try:
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