81308288

素因数分解:

$2^7\times {\mathrm{31}}^2\times {\mathrm{661}}^1$

素因数の和:737

約数の個数: 48

約数和(自身を含む): 167628330

約数和(自身を除く): 86320042

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 496, 661, 961, 992, 1322, 1922, 1984, 2644, 3844, 3968, 5288, 7688, 10576, 15376, 20491, 21152, 30752, 40982, 42304, 61504, 81964, 84608, 123008, 163928, 327856, 635221, 655712, 1270442, 1311424, 2540884, 2622848, 5081768, 10163536, 20327072, 40654144, 81308288]

約数ペア:

[(1, 81308288), (2, 40654144), (4, 20327072), (8, 10163536), (16, 5081768), (31, 2622848), (32, 2540884), (62, 1311424), (64, 1270442), (124, 655712), (128, 635221), (248, 327856), (496, 163928), (661, 123008), (961, 84608), (992, 81964), (1322, 61504), (1922, 42304), (1984, 40982), (2644, 30752), (3844, 21152), (3968, 20491), (5288, 15376), (7688, 10576)]