A:
Positive:
1 x 81235455 x 162470919 x 42755595 x 85511233 x 34865367 x 221351165 x 69731835 x 4427
Negative:
-1 x -8123545-5 x -1624709-19 x -427555-95 x -85511-233 x -34865-367 x -22135-1165 x -6973-1835 x -4427
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 8,123,545, 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 | 8,123,545 | |
| -1 | -8,123,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 8,123,545.
Example:
1 x 8,123,545 = 8,123,545
and
-1 x -8,123,545 = 8,123,545
Notice both answers equal 8,123,545
With that explanation out of the way, let's continue. Next, we take the number 8,123,545 and divide it by 2:
8,123,545 ÷ 2 = 4,061,772.5
If the quotient is a whole number, then 2 and 4,061,772.5 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 | 8,123,545 | |
| -1 | -8,123,545 |
Now, we try dividing 8,123,545 by 3:
8,123,545 ÷ 3 = 2,707,848.3333
If the quotient is a whole number, then 3 and 2,707,848.3333 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 | 8,123,545 | |
| -1 | -8,123,545 |
Let's try dividing by 4:
8,123,545 ÷ 4 = 2,030,886.25
If the quotient is a whole number, then 4 and 2,030,886.25 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 | 8,123,545 | |
| -1 | 8,123,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 233 | 367 | 1,165 | 1,835 | 4,427 | 6,973 | 22,135 | 34,865 | 85,511 | 427,555 | 1,624,709 | 8,123,545 |
| -1 | -5 | -19 | -95 | -233 | -367 | -1,165 | -1,835 | -4,427 | -6,973 | -22,135 | -34,865 | -85,511 | -427,555 | -1,624,709 | -8,123,545 |
Here are some more numbers to try:
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