A:
Positive:
1 x 651081555 x 130216317 x 930116519 x 342674535 x 186023395 x 685349133 x 489535361 x 180355665 x 979071805 x 360712527 x 257655153 x 12635
Negative:
-1 x -65108155-5 x -13021631-7 x -9301165-19 x -3426745-35 x -1860233-95 x -685349-133 x -489535-361 x -180355-665 x -97907-1805 x -36071-2527 x -25765-5153 x -12635
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 65,108,155, 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 | 65,108,155 | |
| -1 | -65,108,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 65,108,155.
Example:
1 x 65,108,155 = 65,108,155
and
-1 x -65,108,155 = 65,108,155
Notice both answers equal 65,108,155
With that explanation out of the way, let's continue. Next, we take the number 65,108,155 and divide it by 2:
65,108,155 ÷ 2 = 32,554,077.5
If the quotient is a whole number, then 2 and 32,554,077.5 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 | 65,108,155 | |
| -1 | -65,108,155 |
Now, we try dividing 65,108,155 by 3:
65,108,155 ÷ 3 = 21,702,718.3333
If the quotient is a whole number, then 3 and 21,702,718.3333 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 | 65,108,155 | |
| -1 | -65,108,155 |
Let's try dividing by 4:
65,108,155 ÷ 4 = 16,277,038.75
If the quotient is a whole number, then 4 and 16,277,038.75 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 | 65,108,155 | |
| -1 | 65,108,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 19 | 35 | 95 | 133 | 361 | 665 | 1,805 | 2,527 | 5,153 | 12,635 | 25,765 | 36,071 | 97,907 | 180,355 | 489,535 | 685,349 | 1,860,233 | 3,426,745 | 9,301,165 | 13,021,631 | 65,108,155 |
| -1 | -5 | -7 | -19 | -35 | -95 | -133 | -361 | -665 | -1,805 | -2,527 | -5,153 | -12,635 | -25,765 | -36,071 | -97,907 | -180,355 | -489,535 | -685,349 | -1,860,233 | -3,426,745 | -9,301,165 | -13,021,631 | -65,108,155 |
Here are some more numbers to try:
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