A:
Positive:
1 x 655185655 x 131037137 x 935979535 x 1871959353 x 1856051765 x 371212471 x 265155303 x 12355
Negative:
-1 x -65518565-5 x -13103713-7 x -9359795-35 x -1871959-353 x -185605-1765 x -37121-2471 x -26515-5303 x -12355
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 65,518,565, 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 | 65,518,565 | |
| -1 | -65,518,565 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 65,518,565.
Example:
1 x 65,518,565 = 65,518,565
and
-1 x -65,518,565 = 65,518,565
Notice both answers equal 65,518,565
With that explanation out of the way, let's continue. Next, we take the number 65,518,565 and divide it by 2:
65,518,565 ÷ 2 = 32,759,282.5
If the quotient is a whole number, then 2 and 32,759,282.5 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 | 65,518,565 | |
| -1 | -65,518,565 |
Now, we try dividing 65,518,565 by 3:
65,518,565 ÷ 3 = 21,839,521.6667
If the quotient is a whole number, then 3 and 21,839,521.6667 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 | 65,518,565 | |
| -1 | -65,518,565 |
Let's try dividing by 4:
65,518,565 ÷ 4 = 16,379,641.25
If the quotient is a whole number, then 4 and 16,379,641.25 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 | 65,518,565 | |
| -1 | 65,518,565 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 353 | 1,765 | 2,471 | 5,303 | 12,355 | 26,515 | 37,121 | 185,605 | 1,871,959 | 9,359,795 | 13,103,713 | 65,518,565 |
| -1 | -5 | -7 | -35 | -353 | -1,765 | -2,471 | -5,303 | -12,355 | -26,515 | -37,121 | -185,605 | -1,871,959 | -9,359,795 | -13,103,713 | -65,518,565 |
Here are some more numbers to try:
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