A:
Positive:
1 x 716632077 x 1023760111 x 651483777 x 930691167 x 4291211169 x 613031837 x 390115573 x 12859
Negative:
-1 x -71663207-7 x -10237601-11 x -6514837-77 x -930691-167 x -429121-1169 x -61303-1837 x -39011-5573 x -12859
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 71,663,207, 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 | 71,663,207 | |
| -1 | -71,663,207 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 71,663,207.
Example:
1 x 71,663,207 = 71,663,207
and
-1 x -71,663,207 = 71,663,207
Notice both answers equal 71,663,207
With that explanation out of the way, let's continue. Next, we take the number 71,663,207 and divide it by 2:
71,663,207 ÷ 2 = 35,831,603.5
If the quotient is a whole number, then 2 and 35,831,603.5 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 | 71,663,207 | |
| -1 | -71,663,207 |
Now, we try dividing 71,663,207 by 3:
71,663,207 ÷ 3 = 23,887,735.6667
If the quotient is a whole number, then 3 and 23,887,735.6667 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 | 71,663,207 | |
| -1 | -71,663,207 |
Let's try dividing by 4:
71,663,207 ÷ 4 = 17,915,801.75
If the quotient is a whole number, then 4 and 17,915,801.75 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 | 71,663,207 | |
| -1 | 71,663,207 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 167 | 1,169 | 1,837 | 5,573 | 12,859 | 39,011 | 61,303 | 429,121 | 930,691 | 6,514,837 | 10,237,601 | 71,663,207 |
| -1 | -7 | -11 | -77 | -167 | -1,169 | -1,837 | -5,573 | -12,859 | -39,011 | -61,303 | -429,121 | -930,691 | -6,514,837 | -10,237,601 | -71,663,207 |
Here are some more numbers to try:
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