20540080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1373}}^1$

素因数の和:1414

約数の個数: 80

約数和(自身を含む): 55201824

約数和(自身を除く): 34661744

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 170, 176, 187, 220, 272, 340, 374, 440, 680, 748, 880, 935, 1360, 1373, 1496, 1870, 2746, 2992, 3740, 5492, 6865, 7480, 10984, 13730, 14960, 15103, 21968, 23341, 27460, 30206, 46682, 54920, 60412, 75515, 93364, 109840, 116705, 120824, 151030, 186728, 233410, 241648, 256751, 302060, 373456, 466820, 513502, 604120, 933640, 1027004, 1208240, 1283755, 1867280, 2054008, 2567510, 4108016, 5135020, 10270040, 20540080]

約数ペア:

[(1, 20540080), (2, 10270040), (4, 5135020), (5, 4108016), (8, 2567510), (10, 2054008), (11, 1867280), (16, 1283755), (17, 1208240), (20, 1027004), (22, 933640), (34, 604120), (40, 513502), (44, 466820), (55, 373456), (68, 302060), (80, 256751), (85, 241648), (88, 233410), (110, 186728), (136, 151030), (170, 120824), (176, 116705), (187, 109840), (220, 93364), (272, 75515), (340, 60412), (374, 54920), (440, 46682), (680, 30206), (748, 27460), (880, 23341), (935, 21968), (1360, 15103), (1373, 14960), (1496, 13730), (1870, 10984), (2746, 7480), (2992, 6865), (3740, 5492)]