A:
Positive:
1 x 201804855 x 403609713 x 155234565 x 31046973 x 276445365 x 55289949 x 212654253 x 4745
Negative:
-1 x -20180485-5 x -4036097-13 x -1552345-65 x -310469-73 x -276445-365 x -55289-949 x -21265-4253 x -4745
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 20,180,485, 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 | 20,180,485 | |
| -1 | -20,180,485 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,180,485.
Example:
1 x 20,180,485 = 20,180,485
and
-1 x -20,180,485 = 20,180,485
Notice both answers equal 20,180,485
With that explanation out of the way, let's continue. Next, we take the number 20,180,485 and divide it by 2:
20,180,485 ÷ 2 = 10,090,242.5
If the quotient is a whole number, then 2 and 10,090,242.5 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 | 20,180,485 | |
| -1 | -20,180,485 |
Now, we try dividing 20,180,485 by 3:
20,180,485 ÷ 3 = 6,726,828.3333
If the quotient is a whole number, then 3 and 6,726,828.3333 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 | 20,180,485 | |
| -1 | -20,180,485 |
Let's try dividing by 4:
20,180,485 ÷ 4 = 5,045,121.25
If the quotient is a whole number, then 4 and 5,045,121.25 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 | 20,180,485 | |
| -1 | 20,180,485 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 73 | 365 | 949 | 4,253 | 4,745 | 21,265 | 55,289 | 276,445 | 310,469 | 1,552,345 | 4,036,097 | 20,180,485 |
| -1 | -5 | -13 | -65 | -73 | -365 | -949 | -4,253 | -4,745 | -21,265 | -55,289 | -276,445 | -310,469 | -1,552,345 | -4,036,097 | -20,180,485 |
Here are some more numbers to try:
Try the factor calculator