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ICMC 4
5
5
Part of
ICMC 4
Problems
(1)
sum of divisors is a power of 2
Source: ICMC 2021 Round 1 P5
3/1/2022
Find all composite positive integers
m
m
m
such that, whenever the product of two positive integers
a
a
a
and
b
b
b
is
m
m
m
, their sum is a power of
2
2
2
.Proposed by Harun Khan
number theory
Powers of 2
elementary-number-theory
ICMC
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