A:
Positive:
1 x 7156321711 x 650574717 x 420960137 x 1934141187 x 382691407 x 175831629 x 1137736919 x 10343
Negative:
-1 x -71563217-11 x -6505747-17 x -4209601-37 x -1934141-187 x -382691-407 x -175831-629 x -113773-6919 x -10343
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 71,563,217, 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 | 71,563,217 | |
| -1 | -71,563,217 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 71,563,217.
Example:
1 x 71,563,217 = 71,563,217
and
-1 x -71,563,217 = 71,563,217
Notice both answers equal 71,563,217
With that explanation out of the way, let's continue. Next, we take the number 71,563,217 and divide it by 2:
71,563,217 ÷ 2 = 35,781,608.5
If the quotient is a whole number, then 2 and 35,781,608.5 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 | 71,563,217 | |
| -1 | -71,563,217 |
Now, we try dividing 71,563,217 by 3:
71,563,217 ÷ 3 = 23,854,405.6667
If the quotient is a whole number, then 3 and 23,854,405.6667 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 | 71,563,217 | |
| -1 | -71,563,217 |
Let's try dividing by 4:
71,563,217 ÷ 4 = 17,890,804.25
If the quotient is a whole number, then 4 and 17,890,804.25 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 | 71,563,217 | |
| -1 | 71,563,217 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 37 | 187 | 407 | 629 | 6,919 | 10,343 | 113,773 | 175,831 | 382,691 | 1,934,141 | 4,209,601 | 6,505,747 | 71,563,217 |
| -1 | -11 | -17 | -37 | -187 | -407 | -629 | -6,919 | -10,343 | -113,773 | -175,831 | -382,691 | -1,934,141 | -4,209,601 | -6,505,747 | -71,563,217 |
Here are some more numbers to try:
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