A:
Positive:
1 x 686084637 x 980120911 x 623713377 x 891019257 x 2669591799 x 381372827 x 242693467 x 19789
Negative:
-1 x -68608463-7 x -9801209-11 x -6237133-77 x -891019-257 x -266959-1799 x -38137-2827 x -24269-3467 x -19789
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 68,608,463, 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 | 68,608,463 | |
| -1 | -68,608,463 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 68,608,463.
Example:
1 x 68,608,463 = 68,608,463
and
-1 x -68,608,463 = 68,608,463
Notice both answers equal 68,608,463
With that explanation out of the way, let's continue. Next, we take the number 68,608,463 and divide it by 2:
68,608,463 ÷ 2 = 34,304,231.5
If the quotient is a whole number, then 2 and 34,304,231.5 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 | 68,608,463 | |
| -1 | -68,608,463 |
Now, we try dividing 68,608,463 by 3:
68,608,463 ÷ 3 = 22,869,487.6667
If the quotient is a whole number, then 3 and 22,869,487.6667 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 | 68,608,463 | |
| -1 | -68,608,463 |
Let's try dividing by 4:
68,608,463 ÷ 4 = 17,152,115.75
If the quotient is a whole number, then 4 and 17,152,115.75 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 | 68,608,463 | |
| -1 | 68,608,463 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 257 | 1,799 | 2,827 | 3,467 | 19,789 | 24,269 | 38,137 | 266,959 | 891,019 | 6,237,133 | 9,801,209 | 68,608,463 |
| -1 | -7 | -11 | -77 | -257 | -1,799 | -2,827 | -3,467 | -19,789 | -24,269 | -38,137 | -266,959 | -891,019 | -6,237,133 | -9,801,209 | -68,608,463 |
Here are some more numbers to try:
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