A:
Positive:
1 x 6404191313 x 492630119 x 337062723 x 2784431247 x 259279299 x 214187437 x 1465495681 x 11273
Negative:
-1 x -64041913-13 x -4926301-19 x -3370627-23 x -2784431-247 x -259279-299 x -214187-437 x -146549-5681 x -11273
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 64,041,913, 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 | 64,041,913 | |
| -1 | -64,041,913 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 64,041,913.
Example:
1 x 64,041,913 = 64,041,913
and
-1 x -64,041,913 = 64,041,913
Notice both answers equal 64,041,913
With that explanation out of the way, let's continue. Next, we take the number 64,041,913 and divide it by 2:
64,041,913 ÷ 2 = 32,020,956.5
If the quotient is a whole number, then 2 and 32,020,956.5 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 | 64,041,913 | |
| -1 | -64,041,913 |
Now, we try dividing 64,041,913 by 3:
64,041,913 ÷ 3 = 21,347,304.3333
If the quotient is a whole number, then 3 and 21,347,304.3333 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 | 64,041,913 | |
| -1 | -64,041,913 |
Let's try dividing by 4:
64,041,913 ÷ 4 = 16,010,478.25
If the quotient is a whole number, then 4 and 16,010,478.25 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 | 64,041,913 | |
| -1 | 64,041,913 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 23 | 247 | 299 | 437 | 5,681 | 11,273 | 146,549 | 214,187 | 259,279 | 2,784,431 | 3,370,627 | 4,926,301 | 64,041,913 |
| -1 | -13 | -19 | -23 | -247 | -299 | -437 | -5,681 | -11,273 | -146,549 | -214,187 | -259,279 | -2,784,431 | -3,370,627 | -4,926,301 | -64,041,913 |
Here are some more numbers to try:
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