A:
Positive:
1 x 138946155 x 27789237 x 198494535 x 39698983 x 167405415 x 33481581 x 239152905 x 4783
Negative:
-1 x -13894615-5 x -2778923-7 x -1984945-35 x -396989-83 x -167405-415 x -33481-581 x -23915-2905 x -4783
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 13,894,615, 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 | 13,894,615 | |
| -1 | -13,894,615 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,894,615.
Example:
1 x 13,894,615 = 13,894,615
and
-1 x -13,894,615 = 13,894,615
Notice both answers equal 13,894,615
With that explanation out of the way, let's continue. Next, we take the number 13,894,615 and divide it by 2:
13,894,615 ÷ 2 = 6,947,307.5
If the quotient is a whole number, then 2 and 6,947,307.5 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 | 13,894,615 | |
| -1 | -13,894,615 |
Now, we try dividing 13,894,615 by 3:
13,894,615 ÷ 3 = 4,631,538.3333
If the quotient is a whole number, then 3 and 4,631,538.3333 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 | 13,894,615 | |
| -1 | -13,894,615 |
Let's try dividing by 4:
13,894,615 ÷ 4 = 3,473,653.75
If the quotient is a whole number, then 4 and 3,473,653.75 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 | 13,894,615 | |
| -1 | 13,894,615 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 83 | 415 | 581 | 2,905 | 4,783 | 23,915 | 33,481 | 167,405 | 396,989 | 1,984,945 | 2,778,923 | 13,894,615 |
| -1 | -5 | -7 | -35 | -83 | -415 | -581 | -2,905 | -4,783 | -23,915 | -33,481 | -167,405 | -396,989 | -1,984,945 | -2,778,923 | -13,894,615 |
Here are some more numbers to try:
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