A:
Positive:
1 x 200115377 x 285879113 x 153934929 x 69005391 x 219907203 x 98579377 x 530812639 x 7583
Negative:
-1 x -20011537-7 x -2858791-13 x -1539349-29 x -690053-91 x -219907-203 x -98579-377 x -53081-2639 x -7583
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 20,011,537, 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 | 20,011,537 | |
| -1 | -20,011,537 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,011,537.
Example:
1 x 20,011,537 = 20,011,537
and
-1 x -20,011,537 = 20,011,537
Notice both answers equal 20,011,537
With that explanation out of the way, let's continue. Next, we take the number 20,011,537 and divide it by 2:
20,011,537 ÷ 2 = 10,005,768.5
If the quotient is a whole number, then 2 and 10,005,768.5 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 | 20,011,537 | |
| -1 | -20,011,537 |
Now, we try dividing 20,011,537 by 3:
20,011,537 ÷ 3 = 6,670,512.3333
If the quotient is a whole number, then 3 and 6,670,512.3333 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 | 20,011,537 | |
| -1 | -20,011,537 |
Let's try dividing by 4:
20,011,537 ÷ 4 = 5,002,884.25
If the quotient is a whole number, then 4 and 5,002,884.25 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 | 20,011,537 | |
| -1 | 20,011,537 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 29 | 91 | 203 | 377 | 2,639 | 7,583 | 53,081 | 98,579 | 219,907 | 690,053 | 1,539,349 | 2,858,791 | 20,011,537 |
| -1 | -7 | -13 | -29 | -91 | -203 | -377 | -2,639 | -7,583 | -53,081 | -98,579 | -219,907 | -690,053 | -1,539,349 | -2,858,791 | -20,011,537 |
Here are some more numbers to try:
Try the factor calculator