A:
Positive:
1 x 646053655 x 1292107311 x 587321555 x 117464373 x 885005365 x 177001803 x 804554015 x 16091
Negative:
-1 x -64605365-5 x -12921073-11 x -5873215-55 x -1174643-73 x -885005-365 x -177001-803 x -80455-4015 x -16091
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 64,605,365, 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 | 64,605,365 | |
| -1 | -64,605,365 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 64,605,365.
Example:
1 x 64,605,365 = 64,605,365
and
-1 x -64,605,365 = 64,605,365
Notice both answers equal 64,605,365
With that explanation out of the way, let's continue. Next, we take the number 64,605,365 and divide it by 2:
64,605,365 ÷ 2 = 32,302,682.5
If the quotient is a whole number, then 2 and 32,302,682.5 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 | 64,605,365 | |
| -1 | -64,605,365 |
Now, we try dividing 64,605,365 by 3:
64,605,365 ÷ 3 = 21,535,121.6667
If the quotient is a whole number, then 3 and 21,535,121.6667 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 | 64,605,365 | |
| -1 | -64,605,365 |
Let's try dividing by 4:
64,605,365 ÷ 4 = 16,151,341.25
If the quotient is a whole number, then 4 and 16,151,341.25 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 | 64,605,365 | |
| -1 | 64,605,365 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 73 | 365 | 803 | 4,015 | 16,091 | 80,455 | 177,001 | 885,005 | 1,174,643 | 5,873,215 | 12,921,073 | 64,605,365 |
| -1 | -5 | -11 | -55 | -73 | -365 | -803 | -4,015 | -16,091 | -80,455 | -177,001 | -885,005 | -1,174,643 | -5,873,215 | -12,921,073 | -64,605,365 |
Here are some more numbers to try:
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