A:
Positive:
1 x 19788883729 x 682375341 x 4826557149 x 13281131117 x 1771611189 x 1664334321 x 457976109 x 32393
Negative:
-1 x -197888837-29 x -6823753-41 x -4826557-149 x -1328113-1117 x -177161-1189 x -166433-4321 x -45797-6109 x -32393
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 197,888,837, 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 | 197,888,837 | |
| -1 | -197,888,837 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 197,888,837.
Example:
1 x 197,888,837 = 197,888,837
and
-1 x -197,888,837 = 197,888,837
Notice both answers equal 197,888,837
With that explanation out of the way, let's continue. Next, we take the number 197,888,837 and divide it by 2:
197,888,837 ÷ 2 = 98,944,418.5
If the quotient is a whole number, then 2 and 98,944,418.5 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 | 197,888,837 | |
| -1 | -197,888,837 |
Now, we try dividing 197,888,837 by 3:
197,888,837 ÷ 3 = 65,962,945.6667
If the quotient is a whole number, then 3 and 65,962,945.6667 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 | 197,888,837 | |
| -1 | -197,888,837 |
Let's try dividing by 4:
197,888,837 ÷ 4 = 49,472,209.25
If the quotient is a whole number, then 4 and 49,472,209.25 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 | 197,888,837 | |
| -1 | 197,888,837 |
If you did it right, you will end up with this table:
| 1 | 29 | 41 | 149 | 1,117 | 1,189 | 4,321 | 6,109 | 32,393 | 45,797 | 166,433 | 177,161 | 1,328,113 | 4,826,557 | 6,823,753 | 197,888,837 |
| -1 | -29 | -41 | -149 | -1,117 | -1,189 | -4,321 | -6,109 | -32,393 | -45,797 | -166,433 | -177,161 | -1,328,113 | -4,826,557 | -6,823,753 | -197,888,837 |
Here are some more numbers to try:
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