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u/Annual-Art5409

▲ 5 r/askmath

I made something called hyper-perfect number and I only found 3 of them; 8, 21 and 512 (hyper perfect numbers is like a number where 𝜎(𝜎(n))=3n)

I also wrote code and it did up to 2,000,000 and it didn't find any so is there any way to find the 4th hyper perfect number?

my work:

8: σ(8)=15, σ(15)=24=3⋅8

21: σ(21)=32, σ(32)=63=3⋅21

512: σ(512)=1023, σ(1023)=1536=3⋅512

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u/Annual-Art5409 — 5 days ago