A:
Positive:
1 x 39464455 x 78928979 x 4995597 x 40685103 x 38315395 x 9991485 x 8137515 x 7663
Negative:
-1 x -3946445-5 x -789289-79 x -49955-97 x -40685-103 x -38315-395 x -9991-485 x -8137-515 x -7663
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 3,946,445, 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 | 3,946,445 | |
| -1 | -3,946,445 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,946,445.
Example:
1 x 3,946,445 = 3,946,445
and
-1 x -3,946,445 = 3,946,445
Notice both answers equal 3,946,445
With that explanation out of the way, let's continue. Next, we take the number 3,946,445 and divide it by 2:
3,946,445 ÷ 2 = 1,973,222.5
If the quotient is a whole number, then 2 and 1,973,222.5 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 | 3,946,445 | |
| -1 | -3,946,445 |
Now, we try dividing 3,946,445 by 3:
3,946,445 ÷ 3 = 1,315,481.6667
If the quotient is a whole number, then 3 and 1,315,481.6667 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 | 3,946,445 | |
| -1 | -3,946,445 |
Let's try dividing by 4:
3,946,445 ÷ 4 = 986,611.25
If the quotient is a whole number, then 4 and 986,611.25 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 | 3,946,445 | |
| -1 | 3,946,445 |
If you did it right, you will end up with this table:
| 1 | 5 | 79 | 97 | 103 | 395 | 485 | 515 | 7,663 | 8,137 | 9,991 | 38,315 | 40,685 | 49,955 | 789,289 | 3,946,445 |
| -1 | -5 | -79 | -97 | -103 | -395 | -485 | -515 | -7,663 | -8,137 | -9,991 | -38,315 | -40,685 | -49,955 | -789,289 | -3,946,445 |
Here are some more numbers to try:
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