A:
Positive:
1 x 660402617 x 943432331 x 2130331217 x 304333271 x 2436911123 x 588071897 x 348137861 x 8401
Negative:
-1 x -66040261-7 x -9434323-31 x -2130331-217 x -304333-271 x -243691-1123 x -58807-1897 x -34813-7861 x -8401
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 66,040,261, 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 | 66,040,261 | |
| -1 | -66,040,261 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 66,040,261.
Example:
1 x 66,040,261 = 66,040,261
and
-1 x -66,040,261 = 66,040,261
Notice both answers equal 66,040,261
With that explanation out of the way, let's continue. Next, we take the number 66,040,261 and divide it by 2:
66,040,261 ÷ 2 = 33,020,130.5
If the quotient is a whole number, then 2 and 33,020,130.5 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 | 66,040,261 | |
| -1 | -66,040,261 |
Now, we try dividing 66,040,261 by 3:
66,040,261 ÷ 3 = 22,013,420.3333
If the quotient is a whole number, then 3 and 22,013,420.3333 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 | 66,040,261 | |
| -1 | -66,040,261 |
Let's try dividing by 4:
66,040,261 ÷ 4 = 16,510,065.25
If the quotient is a whole number, then 4 and 16,510,065.25 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 | 66,040,261 | |
| -1 | 66,040,261 |
If you did it right, you will end up with this table:
| 1 | 7 | 31 | 217 | 271 | 1,123 | 1,897 | 7,861 | 8,401 | 34,813 | 58,807 | 243,691 | 304,333 | 2,130,331 | 9,434,323 | 66,040,261 |
| -1 | -7 | -31 | -217 | -271 | -1,123 | -1,897 | -7,861 | -8,401 | -34,813 | -58,807 | -243,691 | -304,333 | -2,130,331 | -9,434,323 | -66,040,261 |
Here are some more numbers to try:
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