A:
Positive:
1 x 771716755 x 154343357 x 1102452525 x 308686735 x 220490571 x 1086925175 x 440981355 x 217385497 x 1552751775 x 434772485 x 310556211 x 12425
Negative:
-1 x -77171675-5 x -15434335-7 x -11024525-25 x -3086867-35 x -2204905-71 x -1086925-175 x -440981-355 x -217385-497 x -155275-1775 x -43477-2485 x -31055-6211 x -12425
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 77,171,675, 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 | 77,171,675 | |
| -1 | -77,171,675 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 77,171,675.
Example:
1 x 77,171,675 = 77,171,675
and
-1 x -77,171,675 = 77,171,675
Notice both answers equal 77,171,675
With that explanation out of the way, let's continue. Next, we take the number 77,171,675 and divide it by 2:
77,171,675 ÷ 2 = 38,585,837.5
If the quotient is a whole number, then 2 and 38,585,837.5 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 | 77,171,675 | |
| -1 | -77,171,675 |
Now, we try dividing 77,171,675 by 3:
77,171,675 ÷ 3 = 25,723,891.6667
If the quotient is a whole number, then 3 and 25,723,891.6667 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 | 77,171,675 | |
| -1 | -77,171,675 |
Let's try dividing by 4:
77,171,675 ÷ 4 = 19,292,918.75
If the quotient is a whole number, then 4 and 19,292,918.75 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 | 77,171,675 | |
| -1 | 77,171,675 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 71 | 175 | 355 | 497 | 1,775 | 2,485 | 6,211 | 12,425 | 31,055 | 43,477 | 155,275 | 217,385 | 440,981 | 1,086,925 | 2,204,905 | 3,086,867 | 11,024,525 | 15,434,335 | 77,171,675 |
| -1 | -5 | -7 | -25 | -35 | -71 | -175 | -355 | -497 | -1,775 | -2,485 | -6,211 | -12,425 | -31,055 | -43,477 | -155,275 | -217,385 | -440,981 | -1,086,925 | -2,204,905 | -3,086,867 | -11,024,525 | -15,434,335 | -77,171,675 |
Here are some more numbers to try:
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