A:
Positive:
1 x 1511621655 x 302324337 x 2159459511 x 1374201535 x 431891955 x 274840377 x 1963145385 x 392629
Negative:
-1 x -151162165-5 x -30232433-7 x -21594595-11 x -13742015-35 x -4318919-55 x -2748403-77 x -1963145-385 x -392629
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 151,162,165, 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 | 151,162,165 | |
| -1 | -151,162,165 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 151,162,165.
Example:
1 x 151,162,165 = 151,162,165
and
-1 x -151,162,165 = 151,162,165
Notice both answers equal 151,162,165
With that explanation out of the way, let's continue. Next, we take the number 151,162,165 and divide it by 2:
151,162,165 ÷ 2 = 75,581,082.5
If the quotient is a whole number, then 2 and 75,581,082.5 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 | 151,162,165 | |
| -1 | -151,162,165 |
Now, we try dividing 151,162,165 by 3:
151,162,165 ÷ 3 = 50,387,388.3333
If the quotient is a whole number, then 3 and 50,387,388.3333 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 | 151,162,165 | |
| -1 | -151,162,165 |
Let's try dividing by 4:
151,162,165 ÷ 4 = 37,790,541.25
If the quotient is a whole number, then 4 and 37,790,541.25 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 | 151,162,165 | |
| -1 | 151,162,165 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 385 | 392,629 | 1,963,145 | 2,748,403 | 4,318,919 | 13,742,015 | 21,594,595 | 30,232,433 | 151,162,165 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -385 | -392,629 | -1,963,145 | -2,748,403 | -4,318,919 | -13,742,015 | -21,594,595 | -30,232,433 | -151,162,165 |
Here are some more numbers to try:
Try the factor calculator