81611621

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{149}}^1\times {\mathrm{463}}^1$

素因数の和:645

約数の個数: 24

約数和(自身を含む): 101894400

約数和(自身を除く): 20282779

約数列:

[1, 7, 13, 91, 149, 169, 463, 1043, 1183, 1937, 3241, 6019, 13559, 25181, 42133, 68987, 78247, 176267, 482909, 547729, 896831, 6277817, 11658803, 81611621]

約数ペア:

[(1, 81611621), (7, 11658803), (13, 6277817), (91, 896831), (149, 547729), (169, 482909), (463, 176267), (1043, 78247), (1183, 68987), (1937, 42133), (3241, 25181), (6019, 13559)]