A:
Positive:
1 x 21064405119 x 1108652923 x 9158437437 x 482023509 x 413839947 x 2224339671 x 2178111707 x 17993
Negative:
-1 x -210644051-19 x -11086529-23 x -9158437-437 x -482023-509 x -413839-947 x -222433-9671 x -21781-11707 x -17993
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 210,644,051, 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 | 210,644,051 | |
| -1 | -210,644,051 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 210,644,051.
Example:
1 x 210,644,051 = 210,644,051
and
-1 x -210,644,051 = 210,644,051
Notice both answers equal 210,644,051
With that explanation out of the way, let's continue. Next, we take the number 210,644,051 and divide it by 2:
210,644,051 ÷ 2 = 105,322,025.5
If the quotient is a whole number, then 2 and 105,322,025.5 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 | 210,644,051 | |
| -1 | -210,644,051 |
Now, we try dividing 210,644,051 by 3:
210,644,051 ÷ 3 = 70,214,683.6667
If the quotient is a whole number, then 3 and 70,214,683.6667 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 | 210,644,051 | |
| -1 | -210,644,051 |
Let's try dividing by 4:
210,644,051 ÷ 4 = 52,661,012.75
If the quotient is a whole number, then 4 and 52,661,012.75 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 | 210,644,051 | |
| -1 | 210,644,051 |
If you did it right, you will end up with this table:
| 1 | 19 | 23 | 437 | 509 | 947 | 9,671 | 11,707 | 17,993 | 21,781 | 222,433 | 413,839 | 482,023 | 9,158,437 | 11,086,529 | 210,644,051 |
| -1 | -19 | -23 | -437 | -509 | -947 | -9,671 | -11,707 | -17,993 | -21,781 | -222,433 | -413,839 | -482,023 | -9,158,437 | -11,086,529 | -210,644,051 |
Here are some more numbers to try:
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