A:
Positive:
1 x 680178955 x 1360357911 x 618344555 x 1236689157 x 433235785 x 866471727 x 393857877 x 8635
Negative:
-1 x -68017895-5 x -13603579-11 x -6183445-55 x -1236689-157 x -433235-785 x -86647-1727 x -39385-7877 x -8635
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 68,017,895, 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 | 68,017,895 | |
| -1 | -68,017,895 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 68,017,895.
Example:
1 x 68,017,895 = 68,017,895
and
-1 x -68,017,895 = 68,017,895
Notice both answers equal 68,017,895
With that explanation out of the way, let's continue. Next, we take the number 68,017,895 and divide it by 2:
68,017,895 ÷ 2 = 34,008,947.5
If the quotient is a whole number, then 2 and 34,008,947.5 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 | 68,017,895 | |
| -1 | -68,017,895 |
Now, we try dividing 68,017,895 by 3:
68,017,895 ÷ 3 = 22,672,631.6667
If the quotient is a whole number, then 3 and 22,672,631.6667 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 | 68,017,895 | |
| -1 | -68,017,895 |
Let's try dividing by 4:
68,017,895 ÷ 4 = 17,004,473.75
If the quotient is a whole number, then 4 and 17,004,473.75 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 | 68,017,895 | |
| -1 | 68,017,895 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 157 | 785 | 1,727 | 7,877 | 8,635 | 39,385 | 86,647 | 433,235 | 1,236,689 | 6,183,445 | 13,603,579 | 68,017,895 |
| -1 | -5 | -11 | -55 | -157 | -785 | -1,727 | -7,877 | -8,635 | -39,385 | -86,647 | -433,235 | -1,236,689 | -6,183,445 | -13,603,579 | -68,017,895 |
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