21921680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{859}}^1$

素因数の和:912

約数の個数: 80

約数和(自身を含む): 57585600

約数和(自身を除く): 35663920

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 40, 44, 55, 58, 80, 88, 110, 116, 145, 176, 220, 232, 290, 319, 440, 464, 580, 638, 859, 880, 1160, 1276, 1595, 1718, 2320, 2552, 3190, 3436, 4295, 5104, 6380, 6872, 8590, 9449, 12760, 13744, 17180, 18898, 24911, 25520, 34360, 37796, 47245, 49822, 68720, 75592, 94490, 99644, 124555, 151184, 188980, 199288, 249110, 274021, 377960, 398576, 498220, 548042, 755920, 996440, 1096084, 1370105, 1992880, 2192168, 2740210, 4384336, 5480420, 10960840, 21921680]

約数ペア:

[(1, 21921680), (2, 10960840), (4, 5480420), (5, 4384336), (8, 2740210), (10, 2192168), (11, 1992880), (16, 1370105), (20, 1096084), (22, 996440), (29, 755920), (40, 548042), (44, 498220), (55, 398576), (58, 377960), (80, 274021), (88, 249110), (110, 199288), (116, 188980), (145, 151184), (176, 124555), (220, 99644), (232, 94490), (290, 75592), (319, 68720), (440, 49822), (464, 47245), (580, 37796), (638, 34360), (859, 25520), (880, 24911), (1160, 18898), (1276, 17180), (1595, 13744), (1718, 12760), (2320, 9449), (2552, 8590), (3190, 6872), (3436, 6380), (4295, 5104)]