A:
Positive:
1 x 1381887111 x 125626119 x 72730937 x 373483209 x 66119407 x 33953703 x 196571787 x 7733
Negative:
-1 x -13818871-11 x -1256261-19 x -727309-37 x -373483-209 x -66119-407 x -33953-703 x -19657-1787 x -7733
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 13,818,871, 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 | 13,818,871 | |
| -1 | -13,818,871 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,818,871.
Example:
1 x 13,818,871 = 13,818,871
and
-1 x -13,818,871 = 13,818,871
Notice both answers equal 13,818,871
With that explanation out of the way, let's continue. Next, we take the number 13,818,871 and divide it by 2:
13,818,871 ÷ 2 = 6,909,435.5
If the quotient is a whole number, then 2 and 6,909,435.5 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 | 13,818,871 | |
| -1 | -13,818,871 |
Now, we try dividing 13,818,871 by 3:
13,818,871 ÷ 3 = 4,606,290.3333
If the quotient is a whole number, then 3 and 4,606,290.3333 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 | 13,818,871 | |
| -1 | -13,818,871 |
Let's try dividing by 4:
13,818,871 ÷ 4 = 3,454,717.75
If the quotient is a whole number, then 4 and 3,454,717.75 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 | 13,818,871 | |
| -1 | 13,818,871 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 37 | 209 | 407 | 703 | 1,787 | 7,733 | 19,657 | 33,953 | 66,119 | 373,483 | 727,309 | 1,256,261 | 13,818,871 |
| -1 | -11 | -19 | -37 | -209 | -407 | -703 | -1,787 | -7,733 | -19,657 | -33,953 | -66,119 | -373,483 | -727,309 | -1,256,261 | -13,818,871 |
Here are some more numbers to try:
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