A:
Positive:
1 x 6054200655 x 12108401317 x 3561294585 x 7122589179 x 3382235895 x 6764473043 x 19895515215 x 39791
Negative:
-1 x -605420065-5 x -121084013-17 x -35612945-85 x -7122589-179 x -3382235-895 x -676447-3043 x -198955-15215 x -39791
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 605,420,065, 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 | 605,420,065 | |
| -1 | -605,420,065 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 605,420,065.
Example:
1 x 605,420,065 = 605,420,065
and
-1 x -605,420,065 = 605,420,065
Notice both answers equal 605,420,065
With that explanation out of the way, let's continue. Next, we take the number 605,420,065 and divide it by 2:
605,420,065 ÷ 2 = 302,710,032.5
If the quotient is a whole number, then 2 and 302,710,032.5 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 | 605,420,065 | |
| -1 | -605,420,065 |
Now, we try dividing 605,420,065 by 3:
605,420,065 ÷ 3 = 201,806,688.3333
If the quotient is a whole number, then 3 and 201,806,688.3333 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 | 605,420,065 | |
| -1 | -605,420,065 |
Let's try dividing by 4:
605,420,065 ÷ 4 = 151,355,016.25
If the quotient is a whole number, then 4 and 151,355,016.25 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 | 605,420,065 | |
| -1 | 605,420,065 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 179 | 895 | 3,043 | 15,215 | 39,791 | 198,955 | 676,447 | 3,382,235 | 7,122,589 | 35,612,945 | 121,084,013 | 605,420,065 |
| -1 | -5 | -17 | -85 | -179 | -895 | -3,043 | -15,215 | -39,791 | -198,955 | -676,447 | -3,382,235 | -7,122,589 | -35,612,945 | -121,084,013 | -605,420,065 |
Here are some more numbers to try:
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