A:
Positive:
1 x 2117173755 x 4234347525 x 846869547 x 4504625125 x 1693739235 x 9009251175 x 1801855875 x 36037
Negative:
-1 x -211717375-5 x -42343475-25 x -8468695-47 x -4504625-125 x -1693739-235 x -900925-1175 x -180185-5875 x -36037
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 211,717,375, 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 | 211,717,375 | |
| -1 | -211,717,375 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 211,717,375.
Example:
1 x 211,717,375 = 211,717,375
and
-1 x -211,717,375 = 211,717,375
Notice both answers equal 211,717,375
With that explanation out of the way, let's continue. Next, we take the number 211,717,375 and divide it by 2:
211,717,375 ÷ 2 = 105,858,687.5
If the quotient is a whole number, then 2 and 105,858,687.5 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 | 211,717,375 | |
| -1 | -211,717,375 |
Now, we try dividing 211,717,375 by 3:
211,717,375 ÷ 3 = 70,572,458.3333
If the quotient is a whole number, then 3 and 70,572,458.3333 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 | 211,717,375 | |
| -1 | -211,717,375 |
Let's try dividing by 4:
211,717,375 ÷ 4 = 52,929,343.75
If the quotient is a whole number, then 4 and 52,929,343.75 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 | 211,717,375 | |
| -1 | 211,717,375 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 47 | 125 | 235 | 1,175 | 5,875 | 36,037 | 180,185 | 900,925 | 1,693,739 | 4,504,625 | 8,468,695 | 42,343,475 | 211,717,375 |
| -1 | -5 | -25 | -47 | -125 | -235 | -1,175 | -5,875 | -36,037 | -180,185 | -900,925 | -1,693,739 | -4,504,625 | -8,468,695 | -42,343,475 | -211,717,375 |
Here are some more numbers to try:
Try the factor calculator