A:
Positive:
1 x 21133225113 x 1625632729 x 728731997 x 2178683377 x 5605631261 x 1675912813 x 751275779 x 36569
Negative:
-1 x -211332251-13 x -16256327-29 x -7287319-97 x -2178683-377 x -560563-1261 x -167591-2813 x -75127-5779 x -36569
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 211,332,251, 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 | 211,332,251 | |
| -1 | -211,332,251 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 211,332,251.
Example:
1 x 211,332,251 = 211,332,251
and
-1 x -211,332,251 = 211,332,251
Notice both answers equal 211,332,251
With that explanation out of the way, let's continue. Next, we take the number 211,332,251 and divide it by 2:
211,332,251 ÷ 2 = 105,666,125.5
If the quotient is a whole number, then 2 and 105,666,125.5 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 | 211,332,251 | |
| -1 | -211,332,251 |
Now, we try dividing 211,332,251 by 3:
211,332,251 ÷ 3 = 70,444,083.6667
If the quotient is a whole number, then 3 and 70,444,083.6667 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 | 211,332,251 | |
| -1 | -211,332,251 |
Let's try dividing by 4:
211,332,251 ÷ 4 = 52,833,062.75
If the quotient is a whole number, then 4 and 52,833,062.75 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 | 211,332,251 | |
| -1 | 211,332,251 |
If you did it right, you will end up with this table:
| 1 | 13 | 29 | 97 | 377 | 1,261 | 2,813 | 5,779 | 36,569 | 75,127 | 167,591 | 560,563 | 2,178,683 | 7,287,319 | 16,256,327 | 211,332,251 |
| -1 | -13 | -29 | -97 | -377 | -1,261 | -2,813 | -5,779 | -36,569 | -75,127 | -167,591 | -560,563 | -2,178,683 | -7,287,319 | -16,256,327 | -211,332,251 |
Here are some more numbers to try:
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