A:
Positive:
1 x 712149137 x 1017355911 x 647408377 x 92486983 x 858011121 x 588553581 x 122573847 x 84079913 x 780011013 x 703016391 x 111437091 x 10043
Negative:
-1 x -71214913-7 x -10173559-11 x -6474083-77 x -924869-83 x -858011-121 x -588553-581 x -122573-847 x -84079-913 x -78001-1013 x -70301-6391 x -11143-7091 x -10043
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 71,214,913, 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 | 71,214,913 | |
| -1 | -71,214,913 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 71,214,913.
Example:
1 x 71,214,913 = 71,214,913
and
-1 x -71,214,913 = 71,214,913
Notice both answers equal 71,214,913
With that explanation out of the way, let's continue. Next, we take the number 71,214,913 and divide it by 2:
71,214,913 ÷ 2 = 35,607,456.5
If the quotient is a whole number, then 2 and 35,607,456.5 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 | 71,214,913 | |
| -1 | -71,214,913 |
Now, we try dividing 71,214,913 by 3:
71,214,913 ÷ 3 = 23,738,304.3333
If the quotient is a whole number, then 3 and 23,738,304.3333 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 | 71,214,913 | |
| -1 | -71,214,913 |
Let's try dividing by 4:
71,214,913 ÷ 4 = 17,803,728.25
If the quotient is a whole number, then 4 and 17,803,728.25 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 | 71,214,913 | |
| -1 | 71,214,913 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 83 | 121 | 581 | 847 | 913 | 1,013 | 6,391 | 7,091 | 10,043 | 11,143 | 70,301 | 78,001 | 84,079 | 122,573 | 588,553 | 858,011 | 924,869 | 6,474,083 | 10,173,559 | 71,214,913 |
| -1 | -7 | -11 | -77 | -83 | -121 | -581 | -847 | -913 | -1,013 | -6,391 | -7,091 | -10,043 | -11,143 | -70,301 | -78,001 | -84,079 | -122,573 | -588,553 | -858,011 | -924,869 | -6,474,083 | -10,173,559 | -71,214,913 |
Here are some more numbers to try:
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