20721353640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{53777}}^1$

素因数の和:53836

約数の個数: 192

約数和(自身を含む): 70857892800

約数和(自身を除く): 50136539160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 19, 20, 24, 26, 30, 38, 39, 40, 52, 57, 60, 65, 76, 78, 95, 104, 114, 120, 130, 152, 156, 169, 190, 195, 228, 247, 260, 285, 312, 338, 380, 390, 456, 494, 507, 520, 570, 676, 741, 760, 780, 845, 988, 1014, 1140, 1235, 1352, 1482, 1560, 1690, 1976, 2028, 2280, 2470, 2535, 2964, 3211, 3380, 3705, 4056, 4940, 5070, 5928, 6422, 6760, 7410, 9633, 9880, 10140, 12844, 14820, 16055, 19266, 20280, 25688, 29640, 32110, 38532, 48165, 53777, 64220, 77064, 96330, 107554, 128440, 161331, 192660, 215108, 268885, 322662, 385320, 430216, 537770, 645324, 699101, 806655, 1021763, 1075540, 1290648, 1398202, 1613310, 2043526, 2097303, 2151080, 2796404, 3065289, 3226620, 3495505, 4087052, 4194606, 5108815, 5592808, 6130578, 6453240, 6991010, 8174104, 8389212, 9088313, 10217630, 10486515, 12261156, 13282919, 13982020, 15326445, 16778424, 18176626, 20435260, 20973030, 24522312, 26565838, 27264939, 27964040, 30652890, 36353252, 39848757, 40870520, 41946060, 45441565, 53131676, 54529878, 61305780, 66414595, 72706504, 79697514, 83892120, 90883130, 106263352, 109059756, 122611560, 132829190, 136324695, 159395028, 172677947, 181766260, 199243785, 218119512, 265658380, 272649390, 318790056, 345355894, 363532520, 398487570, 518033841, 531316760, 545298780, 690711788, 796975140, 863389735, 1036067682, 1090597560, 1381423576, 1593950280, 1726779470, 2072135364, 2590169205, 3453558940, 4144270728, 5180338410, 6907117880, 10360676820, 20721353640]

約数ペア:

[(1, 20721353640), (2, 10360676820), (3, 6907117880), (4, 5180338410), (5, 4144270728), (6, 3453558940), (8, 2590169205), (10, 2072135364), (12, 1726779470), (13, 1593950280), (15, 1381423576), (19, 1090597560), (20, 1036067682), (24, 863389735), (26, 796975140), (30, 690711788), (38, 545298780), (39, 531316760), (40, 518033841), (52, 398487570), (57, 363532520), (60, 345355894), (65, 318790056), (76, 272649390), (78, 265658380), (95, 218119512), (104, 199243785), (114, 181766260), (120, 172677947), (130, 159395028), (152, 136324695), (156, 132829190), (169, 122611560), (190, 109059756), (195, 106263352), (228, 90883130), (247, 83892120), (260, 79697514), (285, 72706504), (312, 66414595), (338, 61305780), (380, 54529878), (390, 53131676), (456, 45441565), (494, 41946060), (507, 40870520), (520, 39848757), (570, 36353252), (676, 30652890), (741, 27964040), (760, 27264939), (780, 26565838), (845, 24522312), (988, 20973030), (1014, 20435260), (1140, 18176626), (1235, 16778424), (1352, 15326445), (1482, 13982020), (1560, 13282919), (1690, 12261156), (1976, 10486515), (2028, 10217630), (2280, 9088313), (2470, 8389212), (2535, 8174104), (2964, 6991010), (3211, 6453240), (3380, 6130578), (3705, 5592808), (4056, 5108815), (4940, 4194606), (5070, 4087052), (5928, 3495505), (6422, 3226620), (6760, 3065289), (7410, 2796404), (9633, 2151080), (9880, 2097303), (10140, 2043526), (12844, 1613310), (14820, 1398202), (16055, 1290648), (19266, 1075540), (20280, 1021763), (25688, 806655), (29640, 699101), (32110, 645324), (38532, 537770), (48165, 430216), (53777, 385320), (64220, 322662), (77064, 268885), (96330, 215108), (107554, 192660), (128440, 161331)]