A:
Positive:
1 x 713172117 x 10188173101 x 706111149 x 478639677 x 105343707 x 1008731043 x 683774739 x 15049
Negative:
-1 x -71317211-7 x -10188173-101 x -706111-149 x -478639-677 x -105343-707 x -100873-1043 x -68377-4739 x -15049
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 71,317,211, 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 | 71,317,211 | |
| -1 | -71,317,211 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 71,317,211.
Example:
1 x 71,317,211 = 71,317,211
and
-1 x -71,317,211 = 71,317,211
Notice both answers equal 71,317,211
With that explanation out of the way, let's continue. Next, we take the number 71,317,211 and divide it by 2:
71,317,211 ÷ 2 = 35,658,605.5
If the quotient is a whole number, then 2 and 35,658,605.5 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 | 71,317,211 | |
| -1 | -71,317,211 |
Now, we try dividing 71,317,211 by 3:
71,317,211 ÷ 3 = 23,772,403.6667
If the quotient is a whole number, then 3 and 23,772,403.6667 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 | 71,317,211 | |
| -1 | -71,317,211 |
Let's try dividing by 4:
71,317,211 ÷ 4 = 17,829,302.75
If the quotient is a whole number, then 4 and 17,829,302.75 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 | 71,317,211 | |
| -1 | 71,317,211 |
If you did it right, you will end up with this table:
| 1 | 7 | 101 | 149 | 677 | 707 | 1,043 | 4,739 | 15,049 | 68,377 | 100,873 | 105,343 | 478,639 | 706,111 | 10,188,173 | 71,317,211 |
| -1 | -7 | -101 | -149 | -677 | -707 | -1,043 | -4,739 | -15,049 | -68,377 | -100,873 | -105,343 | -478,639 | -706,111 | -10,188,173 | -71,317,211 |
Here are some more numbers to try:
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