A:
Positive:
1 x 5519338137 x 149171343 x 1283567113 x 488437307 x 1797831591 x 346914181 x 132014859 x 11359
Negative:
-1 x -55193381-37 x -1491713-43 x -1283567-113 x -488437-307 x -179783-1591 x -34691-4181 x -13201-4859 x -11359
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 55,193,381, 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 | 55,193,381 | |
| -1 | -55,193,381 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 55,193,381.
Example:
1 x 55,193,381 = 55,193,381
and
-1 x -55,193,381 = 55,193,381
Notice both answers equal 55,193,381
With that explanation out of the way, let's continue. Next, we take the number 55,193,381 and divide it by 2:
55,193,381 ÷ 2 = 27,596,690.5
If the quotient is a whole number, then 2 and 27,596,690.5 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 | 55,193,381 | |
| -1 | -55,193,381 |
Now, we try dividing 55,193,381 by 3:
55,193,381 ÷ 3 = 18,397,793.6667
If the quotient is a whole number, then 3 and 18,397,793.6667 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 | 55,193,381 | |
| -1 | -55,193,381 |
Let's try dividing by 4:
55,193,381 ÷ 4 = 13,798,345.25
If the quotient is a whole number, then 4 and 13,798,345.25 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 | 55,193,381 | |
| -1 | 55,193,381 |
If you did it right, you will end up with this table:
| 1 | 37 | 43 | 113 | 307 | 1,591 | 4,181 | 4,859 | 11,359 | 13,201 | 34,691 | 179,783 | 488,437 | 1,283,567 | 1,491,713 | 55,193,381 |
| -1 | -37 | -43 | -113 | -307 | -1,591 | -4,181 | -4,859 | -11,359 | -13,201 | -34,691 | -179,783 | -488,437 | -1,283,567 | -1,491,713 | -55,193,381 |
Here are some more numbers to try:
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