A:
Positive:
1 x 81206955 x 162413911 x 73824519 x 42740555 x 14764995 x 85481209 x 38855361 x 22495409 x 198551045 x 77711805 x 44992045 x 3971
Negative:
-1 x -8120695-5 x -1624139-11 x -738245-19 x -427405-55 x -147649-95 x -85481-209 x -38855-361 x -22495-409 x -19855-1045 x -7771-1805 x -4499-2045 x -3971
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 8,120,695, 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 | 8,120,695 | |
| -1 | -8,120,695 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 8,120,695.
Example:
1 x 8,120,695 = 8,120,695
and
-1 x -8,120,695 = 8,120,695
Notice both answers equal 8,120,695
With that explanation out of the way, let's continue. Next, we take the number 8,120,695 and divide it by 2:
8,120,695 ÷ 2 = 4,060,347.5
If the quotient is a whole number, then 2 and 4,060,347.5 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 | 8,120,695 | |
| -1 | -8,120,695 |
Now, we try dividing 8,120,695 by 3:
8,120,695 ÷ 3 = 2,706,898.3333
If the quotient is a whole number, then 3 and 2,706,898.3333 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 | 8,120,695 | |
| -1 | -8,120,695 |
Let's try dividing by 4:
8,120,695 ÷ 4 = 2,030,173.75
If the quotient is a whole number, then 4 and 2,030,173.75 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 | 8,120,695 | |
| -1 | 8,120,695 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 19 | 55 | 95 | 209 | 361 | 409 | 1,045 | 1,805 | 2,045 | 3,971 | 4,499 | 7,771 | 19,855 | 22,495 | 38,855 | 85,481 | 147,649 | 427,405 | 738,245 | 1,624,139 | 8,120,695 |
| -1 | -5 | -11 | -19 | -55 | -95 | -209 | -361 | -409 | -1,045 | -1,805 | -2,045 | -3,971 | -4,499 | -7,771 | -19,855 | -22,495 | -38,855 | -85,481 | -147,649 | -427,405 | -738,245 | -1,624,139 | -8,120,695 |
Here are some more numbers to try:
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