A:
Positive:
1 x 672135317 x 960193311 x 611032177 x 87290397 x 692923679 x 989891067 x 629937469 x 8999
Negative:
-1 x -67213531-7 x -9601933-11 x -6110321-77 x -872903-97 x -692923-679 x -98989-1067 x -62993-7469 x -8999
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 67,213,531, 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 | 67,213,531 | |
| -1 | -67,213,531 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 67,213,531.
Example:
1 x 67,213,531 = 67,213,531
and
-1 x -67,213,531 = 67,213,531
Notice both answers equal 67,213,531
With that explanation out of the way, let's continue. Next, we take the number 67,213,531 and divide it by 2:
67,213,531 ÷ 2 = 33,606,765.5
If the quotient is a whole number, then 2 and 33,606,765.5 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 | 67,213,531 | |
| -1 | -67,213,531 |
Now, we try dividing 67,213,531 by 3:
67,213,531 ÷ 3 = 22,404,510.3333
If the quotient is a whole number, then 3 and 22,404,510.3333 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 | 67,213,531 | |
| -1 | -67,213,531 |
Let's try dividing by 4:
67,213,531 ÷ 4 = 16,803,382.75
If the quotient is a whole number, then 4 and 16,803,382.75 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 | 67,213,531 | |
| -1 | 67,213,531 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 97 | 679 | 1,067 | 7,469 | 8,999 | 62,993 | 98,989 | 692,923 | 872,903 | 6,110,321 | 9,601,933 | 67,213,531 |
| -1 | -7 | -11 | -77 | -97 | -679 | -1,067 | -7,469 | -8,999 | -62,993 | -98,989 | -692,923 | -872,903 | -6,110,321 | -9,601,933 | -67,213,531 |
Here are some more numbers to try:
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