18542920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:143

約数の個数: 128

約数和(自身を含む): 50232960

約数和(自身を除く): 31690040

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 37, 40, 44, 55, 67, 68, 74, 85, 88, 110, 134, 136, 148, 170, 185, 187, 220, 268, 296, 335, 340, 370, 374, 407, 440, 536, 629, 670, 680, 737, 740, 748, 814, 935, 1139, 1258, 1340, 1474, 1480, 1496, 1628, 1870, 2035, 2278, 2479, 2516, 2680, 2948, 3145, 3256, 3685, 3740, 4070, 4556, 4958, 5032, 5695, 5896, 6290, 6919, 7370, 7480, 8140, 9112, 9916, 11390, 12395, 12529, 12580, 13838, 14740, 16280, 19832, 22780, 24790, 25058, 25160, 27269, 27676, 29480, 34595, 42143, 45560, 49580, 50116, 54538, 55352, 62645, 69190, 84286, 99160, 100232, 109076, 125290, 136345, 138380, 168572, 210715, 218152, 250580, 272690, 276760, 337144, 421430, 463573, 501160, 545380, 842860, 927146, 1090760, 1685720, 1854292, 2317865, 3708584, 4635730, 9271460, 18542920]

約数ペア:

[(1, 18542920), (2, 9271460), (4, 4635730), (5, 3708584), (8, 2317865), (10, 1854292), (11, 1685720), (17, 1090760), (20, 927146), (22, 842860), (34, 545380), (37, 501160), (40, 463573), (44, 421430), (55, 337144), (67, 276760), (68, 272690), (74, 250580), (85, 218152), (88, 210715), (110, 168572), (134, 138380), (136, 136345), (148, 125290), (170, 109076), (185, 100232), (187, 99160), (220, 84286), (268, 69190), (296, 62645), (335, 55352), (340, 54538), (370, 50116), (374, 49580), (407, 45560), (440, 42143), (536, 34595), (629, 29480), (670, 27676), (680, 27269), (737, 25160), (740, 25058), (748, 24790), (814, 22780), (935, 19832), (1139, 16280), (1258, 14740), (1340, 13838), (1474, 12580), (1480, 12529), (1496, 12395), (1628, 11390), (1870, 9916), (2035, 9112), (2278, 8140), (2479, 7480), (2516, 7370), (2680, 6919), (2948, 6290), (3145, 5896), (3256, 5695), (3685, 5032), (3740, 4958), (4070, 4556)]