19987776

素因数分解:

$2^6\times 3^3\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:333

約数の個数: 112

約数和(自身を含む): 60350400

約数和(自身を除く): 40362624

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 43, 48, 54, 64, 72, 86, 96, 108, 129, 144, 172, 192, 216, 258, 269, 288, 344, 387, 432, 516, 538, 576, 688, 774, 807, 864, 1032, 1076, 1161, 1376, 1548, 1614, 1728, 2064, 2152, 2322, 2421, 2752, 3096, 3228, 4128, 4304, 4644, 4842, 6192, 6456, 7263, 8256, 8608, 9288, 9684, 11567, 12384, 12912, 14526, 17216, 18576, 19368, 23134, 24768, 25824, 29052, 34701, 37152, 38736, 46268, 51648, 58104, 69402, 74304, 77472, 92536, 104103, 116208, 138804, 154944, 185072, 208206, 232416, 277608, 312309, 370144, 416412, 464832, 555216, 624618, 740288, 832824, 1110432, 1249236, 1665648, 2220864, 2498472, 3331296, 4996944, 6662592, 9993888, 19987776]

約数ペア:

[(1, 19987776), (2, 9993888), (3, 6662592), (4, 4996944), (6, 3331296), (8, 2498472), (9, 2220864), (12, 1665648), (16, 1249236), (18, 1110432), (24, 832824), (27, 740288), (32, 624618), (36, 555216), (43, 464832), (48, 416412), (54, 370144), (64, 312309), (72, 277608), (86, 232416), (96, 208206), (108, 185072), (129, 154944), (144, 138804), (172, 116208), (192, 104103), (216, 92536), (258, 77472), (269, 74304), (288, 69402), (344, 58104), (387, 51648), (432, 46268), (516, 38736), (538, 37152), (576, 34701), (688, 29052), (774, 25824), (807, 24768), (864, 23134), (1032, 19368), (1076, 18576), (1161, 17216), (1376, 14526), (1548, 12912), (1614, 12384), (1728, 11567), (2064, 9684), (2152, 9288), (2322, 8608), (2421, 8256), (2752, 7263), (3096, 6456), (3228, 6192), (4128, 4842), (4304, 4644)]