A:
Positive:
1 x 216326117 x 309037311 x 196660113 x 166404777 x 28094391 x 237721143 x 1512771001 x 21611
Negative:
-1 x -21632611-7 x -3090373-11 x -1966601-13 x -1664047-77 x -280943-91 x -237721-143 x -151277-1001 x -21611
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 21,632,611, 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 | 21,632,611 | |
| -1 | -21,632,611 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,632,611.
Example:
1 x 21,632,611 = 21,632,611
and
-1 x -21,632,611 = 21,632,611
Notice both answers equal 21,632,611
With that explanation out of the way, let's continue. Next, we take the number 21,632,611 and divide it by 2:
21,632,611 ÷ 2 = 10,816,305.5
If the quotient is a whole number, then 2 and 10,816,305.5 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 | 21,632,611 | |
| -1 | -21,632,611 |
Now, we try dividing 21,632,611 by 3:
21,632,611 ÷ 3 = 7,210,870.3333
If the quotient is a whole number, then 3 and 7,210,870.3333 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 | 21,632,611 | |
| -1 | -21,632,611 |
Let's try dividing by 4:
21,632,611 ÷ 4 = 5,408,152.75
If the quotient is a whole number, then 4 and 5,408,152.75 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 | 21,632,611 | |
| -1 | 21,632,611 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 13 | 77 | 91 | 143 | 1,001 | 21,611 | 151,277 | 237,721 | 280,943 | 1,664,047 | 1,966,601 | 3,090,373 | 21,632,611 |
| -1 | -7 | -11 | -13 | -77 | -91 | -143 | -1,001 | -21,611 | -151,277 | -237,721 | -280,943 | -1,664,047 | -1,966,601 | -3,090,373 | -21,632,611 |
Here are some more numbers to try:
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