A:
Positive:
1 x 2111310255 x 422262057 x 3016157525 x 844524135 x 6032315175 x 1206463449 x 4702252245 x 940452687 x 785753143 x 6717511225 x 1880913435 x 15715
Negative:
-1 x -211131025-5 x -42226205-7 x -30161575-25 x -8445241-35 x -6032315-175 x -1206463-449 x -470225-2245 x -94045-2687 x -78575-3143 x -67175-11225 x -18809-13435 x -15715
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 211,131,025, 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 | 211,131,025 | |
| -1 | -211,131,025 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 211,131,025.
Example:
1 x 211,131,025 = 211,131,025
and
-1 x -211,131,025 = 211,131,025
Notice both answers equal 211,131,025
With that explanation out of the way, let's continue. Next, we take the number 211,131,025 and divide it by 2:
211,131,025 ÷ 2 = 105,565,512.5
If the quotient is a whole number, then 2 and 105,565,512.5 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 | 211,131,025 | |
| -1 | -211,131,025 |
Now, we try dividing 211,131,025 by 3:
211,131,025 ÷ 3 = 70,377,008.3333
If the quotient is a whole number, then 3 and 70,377,008.3333 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 | 211,131,025 | |
| -1 | -211,131,025 |
Let's try dividing by 4:
211,131,025 ÷ 4 = 52,782,756.25
If the quotient is a whole number, then 4 and 52,782,756.25 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 | 211,131,025 | |
| -1 | 211,131,025 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 175 | 449 | 2,245 | 2,687 | 3,143 | 11,225 | 13,435 | 15,715 | 18,809 | 67,175 | 78,575 | 94,045 | 470,225 | 1,206,463 | 6,032,315 | 8,445,241 | 30,161,575 | 42,226,205 | 211,131,025 |
| -1 | -5 | -7 | -25 | -35 | -175 | -449 | -2,245 | -2,687 | -3,143 | -11,225 | -13,435 | -15,715 | -18,809 | -67,175 | -78,575 | -94,045 | -470,225 | -1,206,463 | -6,032,315 | -8,445,241 | -30,161,575 | -42,226,205 | -211,131,025 |
Here are some more numbers to try:
Try the factor calculator