A:
Positive:
1 x 6171787117 x 363046319 x 3248309109 x 566219323 x 1910771753 x 352071853 x 333072071 x 29801
Negative:
-1 x -61717871-17 x -3630463-19 x -3248309-109 x -566219-323 x -191077-1753 x -35207-1853 x -33307-2071 x -29801
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 61,717,871, 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 | 61,717,871 | |
| -1 | -61,717,871 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 61,717,871.
Example:
1 x 61,717,871 = 61,717,871
and
-1 x -61,717,871 = 61,717,871
Notice both answers equal 61,717,871
With that explanation out of the way, let's continue. Next, we take the number 61,717,871 and divide it by 2:
61,717,871 ÷ 2 = 30,858,935.5
If the quotient is a whole number, then 2 and 30,858,935.5 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 | 61,717,871 | |
| -1 | -61,717,871 |
Now, we try dividing 61,717,871 by 3:
61,717,871 ÷ 3 = 20,572,623.6667
If the quotient is a whole number, then 3 and 20,572,623.6667 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 | 61,717,871 | |
| -1 | -61,717,871 |
Let's try dividing by 4:
61,717,871 ÷ 4 = 15,429,467.75
If the quotient is a whole number, then 4 and 15,429,467.75 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 | 61,717,871 | |
| -1 | 61,717,871 |
If you did it right, you will end up with this table:
| 1 | 17 | 19 | 109 | 323 | 1,753 | 1,853 | 2,071 | 29,801 | 33,307 | 35,207 | 191,077 | 566,219 | 3,248,309 | 3,630,463 | 61,717,871 |
| -1 | -17 | -19 | -109 | -323 | -1,753 | -1,853 | -2,071 | -29,801 | -33,307 | -35,207 | -191,077 | -566,219 | -3,248,309 | -3,630,463 | -61,717,871 |
Here are some more numbers to try:
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