A:
Positive:
1 x 2611802417 x 3731146349 x 533020979 x 3306079109 x 2396149553 x 472297619 x 421939763 x 3423073871 x 674714333 x 602775341 x 489018611 x 30331
Negative:
-1 x -261180241-7 x -37311463-49 x -5330209-79 x -3306079-109 x -2396149-553 x -472297-619 x -421939-763 x -342307-3871 x -67471-4333 x -60277-5341 x -48901-8611 x -30331
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 261,180,241, 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 | 261,180,241 | |
| -1 | -261,180,241 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 261,180,241.
Example:
1 x 261,180,241 = 261,180,241
and
-1 x -261,180,241 = 261,180,241
Notice both answers equal 261,180,241
With that explanation out of the way, let's continue. Next, we take the number 261,180,241 and divide it by 2:
261,180,241 ÷ 2 = 130,590,120.5
If the quotient is a whole number, then 2 and 130,590,120.5 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 | 261,180,241 | |
| -1 | -261,180,241 |
Now, we try dividing 261,180,241 by 3:
261,180,241 ÷ 3 = 87,060,080.3333
If the quotient is a whole number, then 3 and 87,060,080.3333 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 | 261,180,241 | |
| -1 | -261,180,241 |
Let's try dividing by 4:
261,180,241 ÷ 4 = 65,295,060.25
If the quotient is a whole number, then 4 and 65,295,060.25 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 | 261,180,241 | |
| -1 | 261,180,241 |
If you did it right, you will end up with this table:
| 1 | 7 | 49 | 79 | 109 | 553 | 619 | 763 | 3,871 | 4,333 | 5,341 | 8,611 | 30,331 | 48,901 | 60,277 | 67,471 | 342,307 | 421,939 | 472,297 | 2,396,149 | 3,306,079 | 5,330,209 | 37,311,463 | 261,180,241 |
| -1 | -7 | -49 | -79 | -109 | -553 | -619 | -763 | -3,871 | -4,333 | -5,341 | -8,611 | -30,331 | -48,901 | -60,277 | -67,471 | -342,307 | -421,939 | -472,297 | -2,396,149 | -3,306,079 | -5,330,209 | -37,311,463 | -261,180,241 |
Here are some more numbers to try:
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