theorem proved term proof

`sigma_three_five`

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formal statement (Lean)

1841theorem sigma_three_five : sigma 3 5 = 126 := by native_decide

Term-mode proof.

1842
1843/-- σ_3(6) = 1 + 8 + 27 + 216 = 252. -/

Lean names referenced from this declaration's body.

sigma in IndisputableMonolith.Decision.AbileneParadox decl_use
sigma in IndisputableMonolith.NumberTheory.Primes.ArithmeticFunctions decl_use