A:
Positive:
1 x 28153077119 x 1481740983 x 3391937167 x 16858131069 x 2633591577 x 1785233173 x 8872713861 x 20311
Negative:
-1 x -281530771-19 x -14817409-83 x -3391937-167 x -1685813-1069 x -263359-1577 x -178523-3173 x -88727-13861 x -20311
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 281,530,771, 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 | 281,530,771 | |
| -1 | -281,530,771 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 281,530,771.
Example:
1 x 281,530,771 = 281,530,771
and
-1 x -281,530,771 = 281,530,771
Notice both answers equal 281,530,771
With that explanation out of the way, let's continue. Next, we take the number 281,530,771 and divide it by 2:
281,530,771 ÷ 2 = 140,765,385.5
If the quotient is a whole number, then 2 and 140,765,385.5 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 | 281,530,771 | |
| -1 | -281,530,771 |
Now, we try dividing 281,530,771 by 3:
281,530,771 ÷ 3 = 93,843,590.3333
If the quotient is a whole number, then 3 and 93,843,590.3333 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 | 281,530,771 | |
| -1 | -281,530,771 |
Let's try dividing by 4:
281,530,771 ÷ 4 = 70,382,692.75
If the quotient is a whole number, then 4 and 70,382,692.75 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 | 281,530,771 | |
| -1 | 281,530,771 |
If you did it right, you will end up with this table:
| 1 | 19 | 83 | 167 | 1,069 | 1,577 | 3,173 | 13,861 | 20,311 | 88,727 | 178,523 | 263,359 | 1,685,813 | 3,391,937 | 14,817,409 | 281,530,771 |
| -1 | -19 | -83 | -167 | -1,069 | -1,577 | -3,173 | -13,861 | -20,311 | -88,727 | -178,523 | -263,359 | -1,685,813 | -3,391,937 | -14,817,409 | -281,530,771 |
Here are some more numbers to try:
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