A:
Positive:
1 x 650306655 x 130061337 x 929009535 x 1858019463 x 1404552315 x 280913241 x 200654013 x 16205
Negative:
-1 x -65030665-5 x -13006133-7 x -9290095-35 x -1858019-463 x -140455-2315 x -28091-3241 x -20065-4013 x -16205
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 65,030,665, 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 | 65,030,665 | |
| -1 | -65,030,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 65,030,665.
Example:
1 x 65,030,665 = 65,030,665
and
-1 x -65,030,665 = 65,030,665
Notice both answers equal 65,030,665
With that explanation out of the way, let's continue. Next, we take the number 65,030,665 and divide it by 2:
65,030,665 ÷ 2 = 32,515,332.5
If the quotient is a whole number, then 2 and 32,515,332.5 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 | 65,030,665 | |
| -1 | -65,030,665 |
Now, we try dividing 65,030,665 by 3:
65,030,665 ÷ 3 = 21,676,888.3333
If the quotient is a whole number, then 3 and 21,676,888.3333 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 | 65,030,665 | |
| -1 | -65,030,665 |
Let's try dividing by 4:
65,030,665 ÷ 4 = 16,257,666.25
If the quotient is a whole number, then 4 and 16,257,666.25 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 | 65,030,665 | |
| -1 | 65,030,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 463 | 2,315 | 3,241 | 4,013 | 16,205 | 20,065 | 28,091 | 140,455 | 1,858,019 | 9,290,095 | 13,006,133 | 65,030,665 |
| -1 | -5 | -7 | -35 | -463 | -2,315 | -3,241 | -4,013 | -16,205 | -20,065 | -28,091 | -140,455 | -1,858,019 | -9,290,095 | -13,006,133 | -65,030,665 |
Here are some more numbers to try:
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