A:
Positive:
1 x 652099455 x 1304198923 x 2835215115 x 567043137 x 475985685 x 951973151 x 206954139 x 15755
Negative:
-1 x -65209945-5 x -13041989-23 x -2835215-115 x -567043-137 x -475985-685 x -95197-3151 x -20695-4139 x -15755
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 65,209,945, 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 | 65,209,945 | |
| -1 | -65,209,945 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 65,209,945.
Example:
1 x 65,209,945 = 65,209,945
and
-1 x -65,209,945 = 65,209,945
Notice both answers equal 65,209,945
With that explanation out of the way, let's continue. Next, we take the number 65,209,945 and divide it by 2:
65,209,945 ÷ 2 = 32,604,972.5
If the quotient is a whole number, then 2 and 32,604,972.5 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 | 65,209,945 | |
| -1 | -65,209,945 |
Now, we try dividing 65,209,945 by 3:
65,209,945 ÷ 3 = 21,736,648.3333
If the quotient is a whole number, then 3 and 21,736,648.3333 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 | 65,209,945 | |
| -1 | -65,209,945 |
Let's try dividing by 4:
65,209,945 ÷ 4 = 16,302,486.25
If the quotient is a whole number, then 4 and 16,302,486.25 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 | 65,209,945 | |
| -1 | 65,209,945 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 137 | 685 | 3,151 | 4,139 | 15,755 | 20,695 | 95,197 | 475,985 | 567,043 | 2,835,215 | 13,041,989 | 65,209,945 |
| -1 | -5 | -23 | -115 | -137 | -685 | -3,151 | -4,139 | -15,755 | -20,695 | -95,197 | -475,985 | -567,043 | -2,835,215 | -13,041,989 | -65,209,945 |
Here are some more numbers to try:
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