A:
Positive:
1 x 816757755 x 1633515519 x 429872525 x 326703195 x 859745107 x 763325475 x 171949535 x 1526651607 x 508252033 x 401752675 x 305338035 x 10165
Negative:
-1 x -81675775-5 x -16335155-19 x -4298725-25 x -3267031-95 x -859745-107 x -763325-475 x -171949-535 x -152665-1607 x -50825-2033 x -40175-2675 x -30533-8035 x -10165
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 81,675,775, 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 | 81,675,775 | |
| -1 | -81,675,775 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 81,675,775.
Example:
1 x 81,675,775 = 81,675,775
and
-1 x -81,675,775 = 81,675,775
Notice both answers equal 81,675,775
With that explanation out of the way, let's continue. Next, we take the number 81,675,775 and divide it by 2:
81,675,775 ÷ 2 = 40,837,887.5
If the quotient is a whole number, then 2 and 40,837,887.5 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 | 81,675,775 | |
| -1 | -81,675,775 |
Now, we try dividing 81,675,775 by 3:
81,675,775 ÷ 3 = 27,225,258.3333
If the quotient is a whole number, then 3 and 27,225,258.3333 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 | 81,675,775 | |
| -1 | -81,675,775 |
Let's try dividing by 4:
81,675,775 ÷ 4 = 20,418,943.75
If the quotient is a whole number, then 4 and 20,418,943.75 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 | 81,675,775 | |
| -1 | 81,675,775 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 25 | 95 | 107 | 475 | 535 | 1,607 | 2,033 | 2,675 | 8,035 | 10,165 | 30,533 | 40,175 | 50,825 | 152,665 | 171,949 | 763,325 | 859,745 | 3,267,031 | 4,298,725 | 16,335,155 | 81,675,775 |
| -1 | -5 | -19 | -25 | -95 | -107 | -475 | -535 | -1,607 | -2,033 | -2,675 | -8,035 | -10,165 | -30,533 | -40,175 | -50,825 | -152,665 | -171,949 | -763,325 | -859,745 | -3,267,031 | -4,298,725 | -16,335,155 | -81,675,775 |
Here are some more numbers to try:
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