A:
Positive:
1 x 812028355 x 162405677 x 1160040535 x 2320081107 x 758905535 x 151781749 x 1084153745 x 21683
Negative:
-1 x -81202835-5 x -16240567-7 x -11600405-35 x -2320081-107 x -758905-535 x -151781-749 x -108415-3745 x -21683
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 81,202,835, 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 | 81,202,835 | |
| -1 | -81,202,835 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 81,202,835.
Example:
1 x 81,202,835 = 81,202,835
and
-1 x -81,202,835 = 81,202,835
Notice both answers equal 81,202,835
With that explanation out of the way, let's continue. Next, we take the number 81,202,835 and divide it by 2:
81,202,835 ÷ 2 = 40,601,417.5
If the quotient is a whole number, then 2 and 40,601,417.5 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 | 81,202,835 | |
| -1 | -81,202,835 |
Now, we try dividing 81,202,835 by 3:
81,202,835 ÷ 3 = 27,067,611.6667
If the quotient is a whole number, then 3 and 27,067,611.6667 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 | 81,202,835 | |
| -1 | -81,202,835 |
Let's try dividing by 4:
81,202,835 ÷ 4 = 20,300,708.75
If the quotient is a whole number, then 4 and 20,300,708.75 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 | 81,202,835 | |
| -1 | 81,202,835 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 107 | 535 | 749 | 3,745 | 21,683 | 108,415 | 151,781 | 758,905 | 2,320,081 | 11,600,405 | 16,240,567 | 81,202,835 |
| -1 | -5 | -7 | -35 | -107 | -535 | -749 | -3,745 | -21,683 | -108,415 | -151,781 | -758,905 | -2,320,081 | -11,600,405 | -16,240,567 | -81,202,835 |
Here are some more numbers to try:
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