A:
Positive:
1 x 205852017 x 294074313 x 158347747 x 43798391 x 226211329 x 62569611 x 336914277 x 4813
Negative:
-1 x -20585201-7 x -2940743-13 x -1583477-47 x -437983-91 x -226211-329 x -62569-611 x -33691-4277 x -4813
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 20,585,201, 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 | 20,585,201 | |
| -1 | -20,585,201 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,585,201.
Example:
1 x 20,585,201 = 20,585,201
and
-1 x -20,585,201 = 20,585,201
Notice both answers equal 20,585,201
With that explanation out of the way, let's continue. Next, we take the number 20,585,201 and divide it by 2:
20,585,201 ÷ 2 = 10,292,600.5
If the quotient is a whole number, then 2 and 10,292,600.5 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 | 20,585,201 | |
| -1 | -20,585,201 |
Now, we try dividing 20,585,201 by 3:
20,585,201 ÷ 3 = 6,861,733.6667
If the quotient is a whole number, then 3 and 6,861,733.6667 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 | 20,585,201 | |
| -1 | -20,585,201 |
Let's try dividing by 4:
20,585,201 ÷ 4 = 5,146,300.25
If the quotient is a whole number, then 4 and 5,146,300.25 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 | 20,585,201 | |
| -1 | 20,585,201 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 47 | 91 | 329 | 611 | 4,277 | 4,813 | 33,691 | 62,569 | 226,211 | 437,983 | 1,583,477 | 2,940,743 | 20,585,201 |
| -1 | -7 | -13 | -47 | -91 | -329 | -611 | -4,277 | -4,813 | -33,691 | -62,569 | -226,211 | -437,983 | -1,583,477 | -2,940,743 | -20,585,201 |
Here are some more numbers to try:
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