A:
Positive:
1 x 64065055 x 12813017 x 91521535 x 18304349 x 13074579 x 81095245 x 26149331 x 19355395 x 16219553 x 115851655 x 38712317 x 2765
Negative:
-1 x -6406505-5 x -1281301-7 x -915215-35 x -183043-49 x -130745-79 x -81095-245 x -26149-331 x -19355-395 x -16219-553 x -11585-1655 x -3871-2317 x -2765
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 6,406,505, 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 | 6,406,505 | |
| -1 | -6,406,505 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 6,406,505.
Example:
1 x 6,406,505 = 6,406,505
and
-1 x -6,406,505 = 6,406,505
Notice both answers equal 6,406,505
With that explanation out of the way, let's continue. Next, we take the number 6,406,505 and divide it by 2:
6,406,505 ÷ 2 = 3,203,252.5
If the quotient is a whole number, then 2 and 3,203,252.5 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 | 6,406,505 | |
| -1 | -6,406,505 |
Now, we try dividing 6,406,505 by 3:
6,406,505 ÷ 3 = 2,135,501.6667
If the quotient is a whole number, then 3 and 2,135,501.6667 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 | 6,406,505 | |
| -1 | -6,406,505 |
Let's try dividing by 4:
6,406,505 ÷ 4 = 1,601,626.25
If the quotient is a whole number, then 4 and 1,601,626.25 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 | 6,406,505 | |
| -1 | 6,406,505 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 79 | 245 | 331 | 395 | 553 | 1,655 | 2,317 | 2,765 | 3,871 | 11,585 | 16,219 | 19,355 | 26,149 | 81,095 | 130,745 | 183,043 | 915,215 | 1,281,301 | 6,406,505 |
| -1 | -5 | -7 | -35 | -49 | -79 | -245 | -331 | -395 | -553 | -1,655 | -2,317 | -2,765 | -3,871 | -11,585 | -16,219 | -19,355 | -26,149 | -81,095 | -130,745 | -183,043 | -915,215 | -1,281,301 | -6,406,505 |
Here are some more numbers to try:
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