I'm new in python and I'm trying to figure out how to write a function in python that gives me back a list of all factors that calculate a natural number. The number entered shouldn't come on the result list.

it should look like this:

```
realfactor(250)
[1, 2, 5, 10, 25, 50, 125]

```

I probably should start like this:

```
def realfactor(n):
factorlist = []

```

I would appreciate the help