A:
Positive:
1 x 783108555 x 156621717 x 1118726535 x 2237453101 x 775355505 x 155071707 x 1107653535 x 22153
Negative:
-1 x -78310855-5 x -15662171-7 x -11187265-35 x -2237453-101 x -775355-505 x -155071-707 x -110765-3535 x -22153
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 78,310,855, 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 | 78,310,855 | |
| -1 | -78,310,855 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 78,310,855.
Example:
1 x 78,310,855 = 78,310,855
and
-1 x -78,310,855 = 78,310,855
Notice both answers equal 78,310,855
With that explanation out of the way, let's continue. Next, we take the number 78,310,855 and divide it by 2:
78,310,855 ÷ 2 = 39,155,427.5
If the quotient is a whole number, then 2 and 39,155,427.5 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 | 78,310,855 | |
| -1 | -78,310,855 |
Now, we try dividing 78,310,855 by 3:
78,310,855 ÷ 3 = 26,103,618.3333
If the quotient is a whole number, then 3 and 26,103,618.3333 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 | 78,310,855 | |
| -1 | -78,310,855 |
Let's try dividing by 4:
78,310,855 ÷ 4 = 19,577,713.75
If the quotient is a whole number, then 4 and 19,577,713.75 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 | 78,310,855 | |
| -1 | 78,310,855 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 101 | 505 | 707 | 3,535 | 22,153 | 110,765 | 155,071 | 775,355 | 2,237,453 | 11,187,265 | 15,662,171 | 78,310,855 |
| -1 | -5 | -7 | -35 | -101 | -505 | -707 | -3,535 | -22,153 | -110,765 | -155,071 | -775,355 | -2,237,453 | -11,187,265 | -15,662,171 | -78,310,855 |
Here are some more numbers to try:
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