A:
Positive:
1 x 7762668111 x 7056971101 x 768581107 x 725483653 x 1188771111 x 698711177 x 659537183 x 10807
Negative:
-1 x -77626681-11 x -7056971-101 x -768581-107 x -725483-653 x -118877-1111 x -69871-1177 x -65953-7183 x -10807
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 77,626,681, 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 | 77,626,681 | |
| -1 | -77,626,681 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 77,626,681.
Example:
1 x 77,626,681 = 77,626,681
and
-1 x -77,626,681 = 77,626,681
Notice both answers equal 77,626,681
With that explanation out of the way, let's continue. Next, we take the number 77,626,681 and divide it by 2:
77,626,681 ÷ 2 = 38,813,340.5
If the quotient is a whole number, then 2 and 38,813,340.5 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 | 77,626,681 | |
| -1 | -77,626,681 |
Now, we try dividing 77,626,681 by 3:
77,626,681 ÷ 3 = 25,875,560.3333
If the quotient is a whole number, then 3 and 25,875,560.3333 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 | 77,626,681 | |
| -1 | -77,626,681 |
Let's try dividing by 4:
77,626,681 ÷ 4 = 19,406,670.25
If the quotient is a whole number, then 4 and 19,406,670.25 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 | 77,626,681 | |
| -1 | 77,626,681 |
If you did it right, you will end up with this table:
| 1 | 11 | 101 | 107 | 653 | 1,111 | 1,177 | 7,183 | 10,807 | 65,953 | 69,871 | 118,877 | 725,483 | 768,581 | 7,056,971 | 77,626,681 |
| -1 | -11 | -101 | -107 | -653 | -1,111 | -1,177 | -7,183 | -10,807 | -65,953 | -69,871 | -118,877 | -725,483 | -768,581 | -7,056,971 | -77,626,681 |
Here are some more numbers to try:
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