theorem proved term proof

`divisors_card_onehundredtwenty`

No prose has been written for this declaration yet. The Lean source and graph data below render without it.

formal statement (Lean)

1096theorem divisors_card_onehundredtwenty : (120 : ℕ).divisors.card = 16 := by native_decide

Term-mode proof.

1097
1098/-! ### More Möbius values -/
1099
1100/-- μ(10) = 1 (squarefree with 2 prime factors). -/