A389846 Fixed points of A388007.

32, 52, 305, 1004, 55933, 79978, 190658, 408900, 718371, 844583, 2749884, 5179198, 34284253, 443642028, 504912337

Offset

1,1

Links

Table of n, a(n) for n=1..15.

Prog

(Python)
from sympy.ntheory.factor_ import antidivisors
def A388007(n):
    ad = antidivisors(n)
    sad = sum(ad)
    return sum(sad%d for d in ad)
def ok(n): return A388007(n) == n
print([k for k in range(1, 2000) if ok(k)]) # Michael S. Branicky, Oct 17 2025

Crossrefs

Cf. A388007.

Sequence in context: A277870 A077534 A164998 * A165000 A259723 A118617

Adjacent sequences: A389843 A389844 A389845 * A389847 A389848 A389849

Keyword

nonn,more

Author

Michel Marcus, Oct 17 2025

Extensions

a(7)-a(15) from Michael S. Branicky, Oct 18 2025

Status

approved