A:
Positive:
1 x 651404055 x 1302808111 x 592185555 x 1184371131 x 497255655 x 994511441 x 452057205 x 9041
Negative:
-1 x -65140405-5 x -13028081-11 x -5921855-55 x -1184371-131 x -497255-655 x -99451-1441 x -45205-7205 x -9041
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 65,140,405, 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 | 65,140,405 | |
| -1 | -65,140,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 65,140,405.
Example:
1 x 65,140,405 = 65,140,405
and
-1 x -65,140,405 = 65,140,405
Notice both answers equal 65,140,405
With that explanation out of the way, let's continue. Next, we take the number 65,140,405 and divide it by 2:
65,140,405 ÷ 2 = 32,570,202.5
If the quotient is a whole number, then 2 and 32,570,202.5 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 | 65,140,405 | |
| -1 | -65,140,405 |
Now, we try dividing 65,140,405 by 3:
65,140,405 ÷ 3 = 21,713,468.3333
If the quotient is a whole number, then 3 and 21,713,468.3333 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 | 65,140,405 | |
| -1 | -65,140,405 |
Let's try dividing by 4:
65,140,405 ÷ 4 = 16,285,101.25
If the quotient is a whole number, then 4 and 16,285,101.25 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 | 65,140,405 | |
| -1 | 65,140,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 131 | 655 | 1,441 | 7,205 | 9,041 | 45,205 | 99,451 | 497,255 | 1,184,371 | 5,921,855 | 13,028,081 | 65,140,405 |
| -1 | -5 | -11 | -55 | -131 | -655 | -1,441 | -7,205 | -9,041 | -45,205 | -99,451 | -497,255 | -1,184,371 | -5,921,855 | -13,028,081 | -65,140,405 |
Here are some more numbers to try:
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