A:
Positive:
1 x 138959155 x 277918311 x 126326555 x 25265373 x 190355365 x 38071803 x 173053461 x 4015
Negative:
-1 x -13895915-5 x -2779183-11 x -1263265-55 x -252653-73 x -190355-365 x -38071-803 x -17305-3461 x -4015
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 13,895,915, 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 | 13,895,915 | |
| -1 | -13,895,915 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,895,915.
Example:
1 x 13,895,915 = 13,895,915
and
-1 x -13,895,915 = 13,895,915
Notice both answers equal 13,895,915
With that explanation out of the way, let's continue. Next, we take the number 13,895,915 and divide it by 2:
13,895,915 ÷ 2 = 6,947,957.5
If the quotient is a whole number, then 2 and 6,947,957.5 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 | 13,895,915 | |
| -1 | -13,895,915 |
Now, we try dividing 13,895,915 by 3:
13,895,915 ÷ 3 = 4,631,971.6667
If the quotient is a whole number, then 3 and 4,631,971.6667 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 | 13,895,915 | |
| -1 | -13,895,915 |
Let's try dividing by 4:
13,895,915 ÷ 4 = 3,473,978.75
If the quotient is a whole number, then 4 and 3,473,978.75 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 | 13,895,915 | |
| -1 | 13,895,915 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 73 | 365 | 803 | 3,461 | 4,015 | 17,305 | 38,071 | 190,355 | 252,653 | 1,263,265 | 2,779,183 | 13,895,915 |
| -1 | -5 | -11 | -55 | -73 | -365 | -803 | -3,461 | -4,015 | -17,305 | -38,071 | -190,355 | -252,653 | -1,263,265 | -2,779,183 | -13,895,915 |
Here are some more numbers to try:
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