20937984

素因数分解:

$2^8\times 3^1\times {\mathrm{137}}^1\times {\mathrm{199}}^1$

素因数の和:355

約数の個数: 72

約数和(自身を含む): 56414400

約数和(自身を除く): 35476416

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 137, 192, 199, 256, 274, 384, 398, 411, 548, 597, 768, 796, 822, 1096, 1194, 1592, 1644, 2192, 2388, 3184, 3288, 4384, 4776, 6368, 6576, 8768, 9552, 12736, 13152, 17536, 19104, 25472, 26304, 27263, 35072, 38208, 50944, 52608, 54526, 76416, 81789, 105216, 109052, 152832, 163578, 218104, 327156, 436208, 654312, 872416, 1308624, 1744832, 2617248, 3489664, 5234496, 6979328, 10468992, 20937984]

約数ペア:

[(1, 20937984), (2, 10468992), (3, 6979328), (4, 5234496), (6, 3489664), (8, 2617248), (12, 1744832), (16, 1308624), (24, 872416), (32, 654312), (48, 436208), (64, 327156), (96, 218104), (128, 163578), (137, 152832), (192, 109052), (199, 105216), (256, 81789), (274, 76416), (384, 54526), (398, 52608), (411, 50944), (548, 38208), (597, 35072), (768, 27263), (796, 26304), (822, 25472), (1096, 19104), (1194, 17536), (1592, 13152), (1644, 12736), (2192, 9552), (2388, 8768), (3184, 6576), (3288, 6368), (4384, 4776)]