A:
Positive:
1 x 778087713 x 59852923 x 33829953 x 146809299 x 26023491 x 15847689 x 112931219 x 6383
Negative:
-1 x -7780877-13 x -598529-23 x -338299-53 x -146809-299 x -26023-491 x -15847-689 x -11293-1219 x -6383
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 7,780,877, 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 | 7,780,877 | |
| -1 | -7,780,877 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,780,877.
Example:
1 x 7,780,877 = 7,780,877
and
-1 x -7,780,877 = 7,780,877
Notice both answers equal 7,780,877
With that explanation out of the way, let's continue. Next, we take the number 7,780,877 and divide it by 2:
7,780,877 ÷ 2 = 3,890,438.5
If the quotient is a whole number, then 2 and 3,890,438.5 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 | 7,780,877 | |
| -1 | -7,780,877 |
Now, we try dividing 7,780,877 by 3:
7,780,877 ÷ 3 = 2,593,625.6667
If the quotient is a whole number, then 3 and 2,593,625.6667 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 | 7,780,877 | |
| -1 | -7,780,877 |
Let's try dividing by 4:
7,780,877 ÷ 4 = 1,945,219.25
If the quotient is a whole number, then 4 and 1,945,219.25 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 | 7,780,877 | |
| -1 | 7,780,877 |
If you did it right, you will end up with this table:
| 1 | 13 | 23 | 53 | 299 | 491 | 689 | 1,219 | 6,383 | 11,293 | 15,847 | 26,023 | 146,809 | 338,299 | 598,529 | 7,780,877 |
| -1 | -13 | -23 | -53 | -299 | -491 | -689 | -1,219 | -6,383 | -11,293 | -15,847 | -26,023 | -146,809 | -338,299 | -598,529 | -7,780,877 |
Here are some more numbers to try:
Try the factor calculator