> For the complete documentation index, see [llms.txt](https://trizen.gitbook.io/sidef-lang/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trizen.gitbook.io/sidef-lang/programming_tasks/s/sequence_nth_number_with_exactly_n_divisors.md).

# Sequence nth number with exactly n divisors

```ruby
func f(n {.is_prime}) {
    n.prime**(n-1)
}

func f(n) {
    n.th { .sigma0 == n }
}

say 20.of { f(_+1) }
```

## Output:

```
[1, 3, 25, 14, 14641, 44, 24137569, 70, 1089, 405, 819628286980801, 160, 22563490300366186081, 2752, 9801, 462, 21559177407076402401757871041, 1044, 740195513856780056217081017732809, 1520]
```