A:
Positive:
1 x 81166155 x 162332313 x 62435565 x 124871193 x 42055647 x 12545965 x 84112509 x 3235
Negative:
-1 x -8116615-5 x -1623323-13 x -624355-65 x -124871-193 x -42055-647 x -12545-965 x -8411-2509 x -3235
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 8,116,615, 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 | 8,116,615 | |
| -1 | -8,116,615 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 8,116,615.
Example:
1 x 8,116,615 = 8,116,615
and
-1 x -8,116,615 = 8,116,615
Notice both answers equal 8,116,615
With that explanation out of the way, let's continue. Next, we take the number 8,116,615 and divide it by 2:
8,116,615 ÷ 2 = 4,058,307.5
If the quotient is a whole number, then 2 and 4,058,307.5 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 | 8,116,615 | |
| -1 | -8,116,615 |
Now, we try dividing 8,116,615 by 3:
8,116,615 ÷ 3 = 2,705,538.3333
If the quotient is a whole number, then 3 and 2,705,538.3333 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 | 8,116,615 | |
| -1 | -8,116,615 |
Let's try dividing by 4:
8,116,615 ÷ 4 = 2,029,153.75
If the quotient is a whole number, then 4 and 2,029,153.75 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 | 8,116,615 | |
| -1 | 8,116,615 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 193 | 647 | 965 | 2,509 | 3,235 | 8,411 | 12,545 | 42,055 | 124,871 | 624,355 | 1,623,323 | 8,116,615 |
| -1 | -5 | -13 | -65 | -193 | -647 | -965 | -2,509 | -3,235 | -8,411 | -12,545 | -42,055 | -124,871 | -624,355 | -1,623,323 | -8,116,615 |
Here are some more numbers to try:
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