20177360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{263}}^1$

素因数の和:420

約数の個数: 80

約数和(自身を含む): 54210816

約数和(自身を除く): 34033456

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 137, 140, 263, 274, 280, 526, 548, 560, 685, 959, 1052, 1096, 1315, 1370, 1841, 1918, 2104, 2192, 2630, 2740, 3682, 3836, 4208, 4795, 5260, 5480, 7364, 7672, 9205, 9590, 10520, 10960, 14728, 15344, 18410, 19180, 21040, 29456, 36031, 36820, 38360, 72062, 73640, 76720, 144124, 147280, 180155, 252217, 288248, 360310, 504434, 576496, 720620, 1008868, 1261085, 1441240, 2017736, 2522170, 2882480, 4035472, 5044340, 10088680, 20177360]

約数ペア:

[(1, 20177360), (2, 10088680), (4, 5044340), (5, 4035472), (7, 2882480), (8, 2522170), (10, 2017736), (14, 1441240), (16, 1261085), (20, 1008868), (28, 720620), (35, 576496), (40, 504434), (56, 360310), (70, 288248), (80, 252217), (112, 180155), (137, 147280), (140, 144124), (263, 76720), (274, 73640), (280, 72062), (526, 38360), (548, 36820), (560, 36031), (685, 29456), (959, 21040), (1052, 19180), (1096, 18410), (1315, 15344), (1370, 14728), (1841, 10960), (1918, 10520), (2104, 9590), (2192, 9205), (2630, 7672), (2740, 7364), (3682, 5480), (3836, 5260), (4208, 4795)]