20105097728

素因数分解:

$2^9\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{7481}}^1$

素因数の和:7709

約数の個数: 80

約数和(自身を含む): 41791309560

約数和(自身を除く): 21686211832

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 64, 116, 128, 181, 232, 256, 362, 464, 512, 724, 928, 1448, 1856, 2896, 3712, 5249, 5792, 7424, 7481, 10498, 11584, 14848, 14962, 20996, 23168, 29924, 41992, 46336, 59848, 83984, 92672, 119696, 167968, 216949, 239392, 335936, 433898, 478784, 671872, 867796, 957568, 1343744, 1354061, 1735592, 1915136, 2687488, 2708122, 3471184, 3830272, 5416244, 6942368, 10832488, 13884736, 21664976, 27769472, 39267769, 43329952, 55538944, 78535538, 86659904, 111077888, 157071076, 173319808, 314142152, 346639616, 628284304, 693279232, 1256568608, 2513137216, 5026274432, 10052548864, 20105097728]

約数ペア:

[(1, 20105097728), (2, 10052548864), (4, 5026274432), (8, 2513137216), (16, 1256568608), (29, 693279232), (32, 628284304), (58, 346639616), (64, 314142152), (116, 173319808), (128, 157071076), (181, 111077888), (232, 86659904), (256, 78535538), (362, 55538944), (464, 43329952), (512, 39267769), (724, 27769472), (928, 21664976), (1448, 13884736), (1856, 10832488), (2896, 6942368), (3712, 5416244), (5249, 3830272), (5792, 3471184), (7424, 2708122), (7481, 2687488), (10498, 1915136), (11584, 1735592), (14848, 1354061), (14962, 1343744), (20996, 957568), (23168, 867796), (29924, 671872), (41992, 478784), (46336, 433898), (59848, 335936), (83984, 239392), (92672, 216949), (119696, 167968)]