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A372790型
a(n)=τ(10*n)=A000005号(10*n)。
10
4, 6, 8, 8, 6, 12, 8, 10, 12, 9, 8, 16, 8, 12, 12, 12, 8, 18, 8, 12, 16, 12, 8, 20, 8, 12, 16, 16, 8, 18, 8, 14, 16, 12, 12, 24, 8, 12, 16, 15, 8, 24, 8, 16, 18, 12, 8, 24, 12, 12, 16, 16, 8, 24, 12, 20, 16, 12, 8, 24, 8, 12, 24, 16, 12, 24, 8, 16, 16, 18, 8, 30
抵消
1,1
链接
配方奶粉
求和{k=1..n}a(k)~(27*n*(log(n)+2*gamma-1)+n*(9*log(2)+3*logA001620号.
数学
表[DivisorSigma[0,10*n],{n,1,150}]
关键词
非n
作者
状态
经核准的