A:
Positive:
1 x 778776713 x 59905953 x 14693989 x 87503127 x 61321689 x 113031157 x 67311651 x 4717
Negative:
-1 x -7787767-13 x -599059-53 x -146939-89 x -87503-127 x -61321-689 x -11303-1157 x -6731-1651 x -4717
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 7,787,767, 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 | 7,787,767 | |
| -1 | -7,787,767 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,787,767.
Example:
1 x 7,787,767 = 7,787,767
and
-1 x -7,787,767 = 7,787,767
Notice both answers equal 7,787,767
With that explanation out of the way, let's continue. Next, we take the number 7,787,767 and divide it by 2:
7,787,767 ÷ 2 = 3,893,883.5
If the quotient is a whole number, then 2 and 3,893,883.5 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 | 7,787,767 | |
| -1 | -7,787,767 |
Now, we try dividing 7,787,767 by 3:
7,787,767 ÷ 3 = 2,595,922.3333
If the quotient is a whole number, then 3 and 2,595,922.3333 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 | 7,787,767 | |
| -1 | -7,787,767 |
Let's try dividing by 4:
7,787,767 ÷ 4 = 1,946,941.75
If the quotient is a whole number, then 4 and 1,946,941.75 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 | 7,787,767 | |
| -1 | 7,787,767 |
If you did it right, you will end up with this table:
| 1 | 13 | 53 | 89 | 127 | 689 | 1,157 | 1,651 | 4,717 | 6,731 | 11,303 | 61,321 | 87,503 | 146,939 | 599,059 | 7,787,767 |
| -1 | -13 | -53 | -89 | -127 | -689 | -1,157 | -1,651 | -4,717 | -6,731 | -11,303 | -61,321 | -87,503 | -146,939 | -599,059 | -7,787,767 |
Here are some more numbers to try:
Try the factor calculator