A:
Positive:
1 x 680513477 x 972162113 x 523471947 x 144790149 x 138880391 x 747817329 x 206843611 x 111377637 x 1068312273 x 299392303 x 295494277 x 15911
Negative:
-1 x -68051347-7 x -9721621-13 x -5234719-47 x -1447901-49 x -1388803-91 x -747817-329 x -206843-611 x -111377-637 x -106831-2273 x -29939-2303 x -29549-4277 x -15911
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 68,051,347, 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 | 68,051,347 | |
| -1 | -68,051,347 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 68,051,347.
Example:
1 x 68,051,347 = 68,051,347
and
-1 x -68,051,347 = 68,051,347
Notice both answers equal 68,051,347
With that explanation out of the way, let's continue. Next, we take the number 68,051,347 and divide it by 2:
68,051,347 ÷ 2 = 34,025,673.5
If the quotient is a whole number, then 2 and 34,025,673.5 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 | 68,051,347 | |
| -1 | -68,051,347 |
Now, we try dividing 68,051,347 by 3:
68,051,347 ÷ 3 = 22,683,782.3333
If the quotient is a whole number, then 3 and 22,683,782.3333 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 | 68,051,347 | |
| -1 | -68,051,347 |
Let's try dividing by 4:
68,051,347 ÷ 4 = 17,012,836.75
If the quotient is a whole number, then 4 and 17,012,836.75 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 | 68,051,347 | |
| -1 | 68,051,347 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 47 | 49 | 91 | 329 | 611 | 637 | 2,273 | 2,303 | 4,277 | 15,911 | 29,549 | 29,939 | 106,831 | 111,377 | 206,843 | 747,817 | 1,388,803 | 1,447,901 | 5,234,719 | 9,721,621 | 68,051,347 |
| -1 | -7 | -13 | -47 | -49 | -91 | -329 | -611 | -637 | -2,273 | -2,303 | -4,277 | -15,911 | -29,549 | -29,939 | -106,831 | -111,377 | -206,843 | -747,817 | -1,388,803 | -1,447,901 | -5,234,719 | -9,721,621 | -68,051,347 |
Here are some more numbers to try:
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