A:
Positive:
1 x 38951155 x 7790237 x 55644535 x 111289109 x 35735545 x 7147763 x 51051021 x 3815
Negative:
-1 x -3895115-5 x -779023-7 x -556445-35 x -111289-109 x -35735-545 x -7147-763 x -5105-1021 x -3815
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 3,895,115, 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 | 3,895,115 | |
| -1 | -3,895,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,895,115.
Example:
1 x 3,895,115 = 3,895,115
and
-1 x -3,895,115 = 3,895,115
Notice both answers equal 3,895,115
With that explanation out of the way, let's continue. Next, we take the number 3,895,115 and divide it by 2:
3,895,115 ÷ 2 = 1,947,557.5
If the quotient is a whole number, then 2 and 1,947,557.5 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 | 3,895,115 | |
| -1 | -3,895,115 |
Now, we try dividing 3,895,115 by 3:
3,895,115 ÷ 3 = 1,298,371.6667
If the quotient is a whole number, then 3 and 1,298,371.6667 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 | 3,895,115 | |
| -1 | -3,895,115 |
Let's try dividing by 4:
3,895,115 ÷ 4 = 973,778.75
If the quotient is a whole number, then 4 and 973,778.75 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 | 3,895,115 | |
| -1 | 3,895,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 109 | 545 | 763 | 1,021 | 3,815 | 5,105 | 7,147 | 35,735 | 111,289 | 556,445 | 779,023 | 3,895,115 |
| -1 | -5 | -7 | -35 | -109 | -545 | -763 | -1,021 | -3,815 | -5,105 | -7,147 | -35,735 | -111,289 | -556,445 | -779,023 | -3,895,115 |
Here are some more numbers to try:
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