A:
Positive:
1 x 785911637 x 1122730919 x 4136377103 x 763021133 x 590911721 x 1090031957 x 401595737 x 13699
Negative:
-1 x -78591163-7 x -11227309-19 x -4136377-103 x -763021-133 x -590911-721 x -109003-1957 x -40159-5737 x -13699
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 78,591,163, 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 | 78,591,163 | |
| -1 | -78,591,163 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 78,591,163.
Example:
1 x 78,591,163 = 78,591,163
and
-1 x -78,591,163 = 78,591,163
Notice both answers equal 78,591,163
With that explanation out of the way, let's continue. Next, we take the number 78,591,163 and divide it by 2:
78,591,163 ÷ 2 = 39,295,581.5
If the quotient is a whole number, then 2 and 39,295,581.5 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 | 78,591,163 | |
| -1 | -78,591,163 |
Now, we try dividing 78,591,163 by 3:
78,591,163 ÷ 3 = 26,197,054.3333
If the quotient is a whole number, then 3 and 26,197,054.3333 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 | 78,591,163 | |
| -1 | -78,591,163 |
Let's try dividing by 4:
78,591,163 ÷ 4 = 19,647,790.75
If the quotient is a whole number, then 4 and 19,647,790.75 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 | 78,591,163 | |
| -1 | 78,591,163 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 103 | 133 | 721 | 1,957 | 5,737 | 13,699 | 40,159 | 109,003 | 590,911 | 763,021 | 4,136,377 | 11,227,309 | 78,591,163 |
| -1 | -7 | -19 | -103 | -133 | -721 | -1,957 | -5,737 | -13,699 | -40,159 | -109,003 | -590,911 | -763,021 | -4,136,377 | -11,227,309 | -78,591,163 |
Here are some more numbers to try:
Try the factor calculator