A:
Positive:
1 x 6464181113 x 497244783 x 778817139 x 465049431 x 1499811079 x 599091807 x 357735603 x 11537
Negative:
-1 x -64641811-13 x -4972447-83 x -778817-139 x -465049-431 x -149981-1079 x -59909-1807 x -35773-5603 x -11537
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 64,641,811, 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 | 64,641,811 | |
| -1 | -64,641,811 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 64,641,811.
Example:
1 x 64,641,811 = 64,641,811
and
-1 x -64,641,811 = 64,641,811
Notice both answers equal 64,641,811
With that explanation out of the way, let's continue. Next, we take the number 64,641,811 and divide it by 2:
64,641,811 ÷ 2 = 32,320,905.5
If the quotient is a whole number, then 2 and 32,320,905.5 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 | 64,641,811 | |
| -1 | -64,641,811 |
Now, we try dividing 64,641,811 by 3:
64,641,811 ÷ 3 = 21,547,270.3333
If the quotient is a whole number, then 3 and 21,547,270.3333 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 | 64,641,811 | |
| -1 | -64,641,811 |
Let's try dividing by 4:
64,641,811 ÷ 4 = 16,160,452.75
If the quotient is a whole number, then 4 and 16,160,452.75 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 | 64,641,811 | |
| -1 | 64,641,811 |
If you did it right, you will end up with this table:
| 1 | 13 | 83 | 139 | 431 | 1,079 | 1,807 | 5,603 | 11,537 | 35,773 | 59,909 | 149,981 | 465,049 | 778,817 | 4,972,447 | 64,641,811 |
| -1 | -13 | -83 | -139 | -431 | -1,079 | -1,807 | -5,603 | -11,537 | -35,773 | -59,909 | -149,981 | -465,049 | -778,817 | -4,972,447 | -64,641,811 |
Here are some more numbers to try:
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