A:
Positive:
1 x 643112055 x 128622417 x 918731531 x 207455535 x 1837463155 x 414911217 x 2963651085 x 59273
Negative:
-1 x -64311205-5 x -12862241-7 x -9187315-31 x -2074555-35 x -1837463-155 x -414911-217 x -296365-1085 x -59273
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 64,311,205, 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 | 64,311,205 | |
| -1 | -64,311,205 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 64,311,205.
Example:
1 x 64,311,205 = 64,311,205
and
-1 x -64,311,205 = 64,311,205
Notice both answers equal 64,311,205
With that explanation out of the way, let's continue. Next, we take the number 64,311,205 and divide it by 2:
64,311,205 ÷ 2 = 32,155,602.5
If the quotient is a whole number, then 2 and 32,155,602.5 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 | 64,311,205 | |
| -1 | -64,311,205 |
Now, we try dividing 64,311,205 by 3:
64,311,205 ÷ 3 = 21,437,068.3333
If the quotient is a whole number, then 3 and 21,437,068.3333 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 | 64,311,205 | |
| -1 | -64,311,205 |
Let's try dividing by 4:
64,311,205 ÷ 4 = 16,077,801.25
If the quotient is a whole number, then 4 and 16,077,801.25 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 | 64,311,205 | |
| -1 | 64,311,205 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 31 | 35 | 155 | 217 | 1,085 | 59,273 | 296,365 | 414,911 | 1,837,463 | 2,074,555 | 9,187,315 | 12,862,241 | 64,311,205 |
| -1 | -5 | -7 | -31 | -35 | -155 | -217 | -1,085 | -59,273 | -296,365 | -414,911 | -1,837,463 | -2,074,555 | -9,187,315 | -12,862,241 | -64,311,205 |
Here are some more numbers to try:
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