A:
Positive:
1 x 31863955 x 63727917 x 18743519 x 16770585 x 3748795 x 33541323 x 98651615 x 1973
Negative:
-1 x -3186395-5 x -637279-17 x -187435-19 x -167705-85 x -37487-95 x -33541-323 x -9865-1615 x -1973
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 3,186,395, 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 | 3,186,395 | |
| -1 | -3,186,395 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,186,395.
Example:
1 x 3,186,395 = 3,186,395
and
-1 x -3,186,395 = 3,186,395
Notice both answers equal 3,186,395
With that explanation out of the way, let's continue. Next, we take the number 3,186,395 and divide it by 2:
3,186,395 ÷ 2 = 1,593,197.5
If the quotient is a whole number, then 2 and 1,593,197.5 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 | 3,186,395 | |
| -1 | -3,186,395 |
Now, we try dividing 3,186,395 by 3:
3,186,395 ÷ 3 = 1,062,131.6667
If the quotient is a whole number, then 3 and 1,062,131.6667 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 | 3,186,395 | |
| -1 | -3,186,395 |
Let's try dividing by 4:
3,186,395 ÷ 4 = 796,598.75
If the quotient is a whole number, then 4 and 796,598.75 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 | 3,186,395 | |
| -1 | 3,186,395 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 19 | 85 | 95 | 323 | 1,615 | 1,973 | 9,865 | 33,541 | 37,487 | 167,705 | 187,435 | 637,279 | 3,186,395 |
| -1 | -5 | -17 | -19 | -85 | -95 | -323 | -1,615 | -1,973 | -9,865 | -33,541 | -37,487 | -167,705 | -187,435 | -637,279 | -3,186,395 |
Here are some more numbers to try:
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