A:
Positive:
1 x 2610462477 x 3729232111 x 2373147777 x 3390211121 x 2157407311 x 839377847 x 308201991 x 2634172177 x 1199113421 x 763076937 x 3763110901 x 23947
Negative:
-1 x -261046247-7 x -37292321-11 x -23731477-77 x -3390211-121 x -2157407-311 x -839377-847 x -308201-991 x -263417-2177 x -119911-3421 x -76307-6937 x -37631-10901 x -23947
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 261,046,247, 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 | 261,046,247 | |
| -1 | -261,046,247 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 261,046,247.
Example:
1 x 261,046,247 = 261,046,247
and
-1 x -261,046,247 = 261,046,247
Notice both answers equal 261,046,247
With that explanation out of the way, let's continue. Next, we take the number 261,046,247 and divide it by 2:
261,046,247 ÷ 2 = 130,523,123.5
If the quotient is a whole number, then 2 and 130,523,123.5 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 | 261,046,247 | |
| -1 | -261,046,247 |
Now, we try dividing 261,046,247 by 3:
261,046,247 ÷ 3 = 87,015,415.6667
If the quotient is a whole number, then 3 and 87,015,415.6667 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 | 261,046,247 | |
| -1 | -261,046,247 |
Let's try dividing by 4:
261,046,247 ÷ 4 = 65,261,561.75
If the quotient is a whole number, then 4 and 65,261,561.75 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 | 261,046,247 | |
| -1 | 261,046,247 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 121 | 311 | 847 | 991 | 2,177 | 3,421 | 6,937 | 10,901 | 23,947 | 37,631 | 76,307 | 119,911 | 263,417 | 308,201 | 839,377 | 2,157,407 | 3,390,211 | 23,731,477 | 37,292,321 | 261,046,247 |
| -1 | -7 | -11 | -77 | -121 | -311 | -847 | -991 | -2,177 | -3,421 | -6,937 | -10,901 | -23,947 | -37,631 | -76,307 | -119,911 | -263,417 | -308,201 | -839,377 | -2,157,407 | -3,390,211 | -23,731,477 | -37,292,321 | -261,046,247 |
Here are some more numbers to try:
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