A:
Positive:
1 x 273858837 x 391226937 x 74015943 x 636881259 x 105737301 x 909831591 x 172132459 x 11137
Negative:
-1 x -27385883-7 x -3912269-37 x -740159-43 x -636881-259 x -105737-301 x -90983-1591 x -17213-2459 x -11137
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 27,385,883, 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 | 27,385,883 | |
| -1 | -27,385,883 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 27,385,883.
Example:
1 x 27,385,883 = 27,385,883
and
-1 x -27,385,883 = 27,385,883
Notice both answers equal 27,385,883
With that explanation out of the way, let's continue. Next, we take the number 27,385,883 and divide it by 2:
27,385,883 ÷ 2 = 13,692,941.5
If the quotient is a whole number, then 2 and 13,692,941.5 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 | 27,385,883 | |
| -1 | -27,385,883 |
Now, we try dividing 27,385,883 by 3:
27,385,883 ÷ 3 = 9,128,627.6667
If the quotient is a whole number, then 3 and 9,128,627.6667 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 | 27,385,883 | |
| -1 | -27,385,883 |
Let's try dividing by 4:
27,385,883 ÷ 4 = 6,846,470.75
If the quotient is a whole number, then 4 and 6,846,470.75 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 | 27,385,883 | |
| -1 | 27,385,883 |
If you did it right, you will end up with this table:
| 1 | 7 | 37 | 43 | 259 | 301 | 1,591 | 2,459 | 11,137 | 17,213 | 90,983 | 105,737 | 636,881 | 740,159 | 3,912,269 | 27,385,883 |
| -1 | -7 | -37 | -43 | -259 | -301 | -1,591 | -2,459 | -11,137 | -17,213 | -90,983 | -105,737 | -636,881 | -740,159 | -3,912,269 | -27,385,883 |
Here are some more numbers to try:
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