20931456

素因数分解:

$2^7\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{599}}^1$

素因数の和:636

約数の個数: 128

約数和(自身を含む): 68544000

約数和(自身を除く): 47612544

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 16, 21, 24, 26, 28, 32, 39, 42, 48, 52, 56, 64, 78, 84, 91, 96, 104, 112, 128, 156, 168, 182, 192, 208, 224, 273, 312, 336, 364, 384, 416, 448, 546, 599, 624, 672, 728, 832, 896, 1092, 1198, 1248, 1344, 1456, 1664, 1797, 2184, 2396, 2496, 2688, 2912, 3594, 4193, 4368, 4792, 4992, 5824, 7188, 7787, 8386, 8736, 9584, 11648, 12579, 14376, 15574, 16772, 17472, 19168, 23361, 25158, 28752, 31148, 33544, 34944, 38336, 46722, 50316, 54509, 57504, 62296, 67088, 76672, 93444, 100632, 109018, 115008, 124592, 134176, 163527, 186888, 201264, 218036, 230016, 249184, 268352, 327054, 373776, 402528, 436072, 498368, 536704, 654108, 747552, 805056, 872144, 996736, 1308216, 1495104, 1610112, 1744288, 2616432, 2990208, 3488576, 5232864, 6977152, 10465728, 20931456]

約数ペア:

[(1, 20931456), (2, 10465728), (3, 6977152), (4, 5232864), (6, 3488576), (7, 2990208), (8, 2616432), (12, 1744288), (13, 1610112), (14, 1495104), (16, 1308216), (21, 996736), (24, 872144), (26, 805056), (28, 747552), (32, 654108), (39, 536704), (42, 498368), (48, 436072), (52, 402528), (56, 373776), (64, 327054), (78, 268352), (84, 249184), (91, 230016), (96, 218036), (104, 201264), (112, 186888), (128, 163527), (156, 134176), (168, 124592), (182, 115008), (192, 109018), (208, 100632), (224, 93444), (273, 76672), (312, 67088), (336, 62296), (364, 57504), (384, 54509), (416, 50316), (448, 46722), (546, 38336), (599, 34944), (624, 33544), (672, 31148), (728, 28752), (832, 25158), (896, 23361), (1092, 19168), (1198, 17472), (1248, 16772), (1344, 15574), (1456, 14376), (1664, 12579), (1797, 11648), (2184, 9584), (2396, 8736), (2496, 8386), (2688, 7787), (2912, 7188), (3594, 5824), (4193, 4992), (4368, 4792)]