A:
Positive:
1 x 1665017755 x 3330035511 x 1513652525 x 666007131 x 537102555 x 3027305155 x 1074205275 x 605461341 x 488275775 x 2148411705 x 976558525 x 19531
Negative:
-1 x -166501775-5 x -33300355-11 x -15136525-25 x -6660071-31 x -5371025-55 x -3027305-155 x -1074205-275 x -605461-341 x -488275-775 x -214841-1705 x -97655-8525 x -19531
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 166,501,775, 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 | 166,501,775 | |
| -1 | -166,501,775 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 166,501,775.
Example:
1 x 166,501,775 = 166,501,775
and
-1 x -166,501,775 = 166,501,775
Notice both answers equal 166,501,775
With that explanation out of the way, let's continue. Next, we take the number 166,501,775 and divide it by 2:
166,501,775 ÷ 2 = 83,250,887.5
If the quotient is a whole number, then 2 and 83,250,887.5 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 | 166,501,775 | |
| -1 | -166,501,775 |
Now, we try dividing 166,501,775 by 3:
166,501,775 ÷ 3 = 55,500,591.6667
If the quotient is a whole number, then 3 and 55,500,591.6667 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 | 166,501,775 | |
| -1 | -166,501,775 |
Let's try dividing by 4:
166,501,775 ÷ 4 = 41,625,443.75
If the quotient is a whole number, then 4 and 41,625,443.75 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 | 166,501,775 | |
| -1 | 166,501,775 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 31 | 55 | 155 | 275 | 341 | 775 | 1,705 | 8,525 | 19,531 | 97,655 | 214,841 | 488,275 | 605,461 | 1,074,205 | 3,027,305 | 5,371,025 | 6,660,071 | 15,136,525 | 33,300,355 | 166,501,775 |
| -1 | -5 | -11 | -25 | -31 | -55 | -155 | -275 | -341 | -775 | -1,705 | -8,525 | -19,531 | -97,655 | -214,841 | -488,275 | -605,461 | -1,074,205 | -3,027,305 | -5,371,025 | -6,660,071 | -15,136,525 | -33,300,355 | -166,501,775 |
Here are some more numbers to try:
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