Those Fascinating Numbers 205
24 251
the prime number which appears the most often as 18th prime factor of an
integer (see the number 199).
24 335
the tenth number n such that n2 1 is powerful (see the number 485).
24 384
the fifth solution of
σ(n)
n
=
8
3
(see the number 1 488).
24 576
the 16th Granville number (see the number 126).
24 692
the smallest number n which allows the sum
m≤n
ω(m)=2
1
m
to exceed 4 (see the
number 44).
24 846
the eighth number which is not a palindrome, but whose square is a palindrome
(see the number 26).
24 885
the second solution of σ(n) = σ(n + 69) (see the number 8 786).
24 961
the eighth number whose square can be written as the sum of three fourth
powers: 24
9612
=
604
+
654
+
1564
(see the number 481).
25 200
the smallest product common to four triplets of numbers having same sum
and same product, these triplets being (6,56,75), (7,40,90), (9,28,100) and
(12,20,105) (Problem E2872, Amer. Math. Monthly 89 (1982), p.499);
the
24th
highly composite number (see the number 180).
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