A:
Positive:
1 x 184639155 x 369278319 x 97178595 x 194357263 x 70205739 x 249851315 x 140413695 x 4997
Negative:
-1 x -18463915-5 x -3692783-19 x -971785-95 x -194357-263 x -70205-739 x -24985-1315 x -14041-3695 x -4997
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 18,463,915, 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 | 18,463,915 | |
| -1 | -18,463,915 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,463,915.
Example:
1 x 18,463,915 = 18,463,915
and
-1 x -18,463,915 = 18,463,915
Notice both answers equal 18,463,915
With that explanation out of the way, let's continue. Next, we take the number 18,463,915 and divide it by 2:
18,463,915 ÷ 2 = 9,231,957.5
If the quotient is a whole number, then 2 and 9,231,957.5 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 | 18,463,915 | |
| -1 | -18,463,915 |
Now, we try dividing 18,463,915 by 3:
18,463,915 ÷ 3 = 6,154,638.3333
If the quotient is a whole number, then 3 and 6,154,638.3333 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 | 18,463,915 | |
| -1 | -18,463,915 |
Let's try dividing by 4:
18,463,915 ÷ 4 = 4,615,978.75
If the quotient is a whole number, then 4 and 4,615,978.75 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 | 18,463,915 | |
| -1 | 18,463,915 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 263 | 739 | 1,315 | 3,695 | 4,997 | 14,041 | 24,985 | 70,205 | 194,357 | 971,785 | 3,692,783 | 18,463,915 |
| -1 | -5 | -19 | -95 | -263 | -739 | -1,315 | -3,695 | -4,997 | -14,041 | -24,985 | -70,205 | -194,357 | -971,785 | -3,692,783 | -18,463,915 |
Here are some more numbers to try:
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