theorem proved term proof

`sigma_one_ten`

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formal statement (Lean)

 986theorem sigma_one_ten : sigma 1 10 = 18 := by native_decide

Term-mode proof.

 987
 988/-- σ_0(12) = 6 (divisors: 1, 2, 3, 4, 6, 12). -/

Lean names referenced from this declaration's body.

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