A:
Positive:
1 x 7727861455 x 15455722919 x 4067295595 x 81345911291 x 5985956301 x 1226456455 x 11971924529 x 31505
Negative:
-1 x -772786145-5 x -154557229-19 x -40672955-95 x -8134591-1291 x -598595-6301 x -122645-6455 x -119719-24529 x -31505
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 772,786,145, 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 | 772,786,145 | |
| -1 | -772,786,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 772,786,145.
Example:
1 x 772,786,145 = 772,786,145
and
-1 x -772,786,145 = 772,786,145
Notice both answers equal 772,786,145
With that explanation out of the way, let's continue. Next, we take the number 772,786,145 and divide it by 2:
772,786,145 ÷ 2 = 386,393,072.5
If the quotient is a whole number, then 2 and 386,393,072.5 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 | 772,786,145 | |
| -1 | -772,786,145 |
Now, we try dividing 772,786,145 by 3:
772,786,145 ÷ 3 = 257,595,381.6667
If the quotient is a whole number, then 3 and 257,595,381.6667 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 | 772,786,145 | |
| -1 | -772,786,145 |
Let's try dividing by 4:
772,786,145 ÷ 4 = 193,196,536.25
If the quotient is a whole number, then 4 and 193,196,536.25 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 | 772,786,145 | |
| -1 | 772,786,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 1,291 | 6,301 | 6,455 | 24,529 | 31,505 | 119,719 | 122,645 | 598,595 | 8,134,591 | 40,672,955 | 154,557,229 | 772,786,145 |
| -1 | -5 | -19 | -95 | -1,291 | -6,301 | -6,455 | -24,529 | -31,505 | -119,719 | -122,645 | -598,595 | -8,134,591 | -40,672,955 | -154,557,229 | -772,786,145 |
Here are some more numbers to try:
Try the factor calculator