A:
Positive:
1 x 775583055 x 1551166111 x 705075555 x 1410151883 x 878351597 x 485654415 x 175677985 x 9713
Negative:
-1 x -77558305-5 x -15511661-11 x -7050755-55 x -1410151-883 x -87835-1597 x -48565-4415 x -17567-7985 x -9713
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 77,558,305, 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 | 77,558,305 | |
| -1 | -77,558,305 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 77,558,305.
Example:
1 x 77,558,305 = 77,558,305
and
-1 x -77,558,305 = 77,558,305
Notice both answers equal 77,558,305
With that explanation out of the way, let's continue. Next, we take the number 77,558,305 and divide it by 2:
77,558,305 ÷ 2 = 38,779,152.5
If the quotient is a whole number, then 2 and 38,779,152.5 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 | 77,558,305 | |
| -1 | -77,558,305 |
Now, we try dividing 77,558,305 by 3:
77,558,305 ÷ 3 = 25,852,768.3333
If the quotient is a whole number, then 3 and 25,852,768.3333 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 | 77,558,305 | |
| -1 | -77,558,305 |
Let's try dividing by 4:
77,558,305 ÷ 4 = 19,389,576.25
If the quotient is a whole number, then 4 and 19,389,576.25 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 | 77,558,305 | |
| -1 | 77,558,305 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 883 | 1,597 | 4,415 | 7,985 | 9,713 | 17,567 | 48,565 | 87,835 | 1,410,151 | 7,050,755 | 15,511,661 | 77,558,305 |
| -1 | -5 | -11 | -55 | -883 | -1,597 | -4,415 | -7,985 | -9,713 | -17,567 | -48,565 | -87,835 | -1,410,151 | -7,050,755 | -15,511,661 | -77,558,305 |
Here are some more numbers to try:
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