28681728

素因数分解:

$2^9\times 3^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:355

約数の個数: 80

約数和(自身を含む): 77780736

約数和(自身を除く): 49099008

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 71, 96, 128, 142, 192, 213, 256, 263, 284, 384, 426, 512, 526, 568, 768, 789, 852, 1052, 1136, 1536, 1578, 1704, 2104, 2272, 3156, 3408, 4208, 4544, 6312, 6816, 8416, 9088, 12624, 13632, 16832, 18176, 18673, 25248, 27264, 33664, 36352, 37346, 50496, 54528, 56019, 67328, 74692, 100992, 109056, 112038, 134656, 149384, 201984, 224076, 298768, 403968, 448152, 597536, 896304, 1195072, 1792608, 2390144, 3585216, 4780288, 7170432, 9560576, 14340864, 28681728]

約数ペア:

[(1, 28681728), (2, 14340864), (3, 9560576), (4, 7170432), (6, 4780288), (8, 3585216), (12, 2390144), (16, 1792608), (24, 1195072), (32, 896304), (48, 597536), (64, 448152), (71, 403968), (96, 298768), (128, 224076), (142, 201984), (192, 149384), (213, 134656), (256, 112038), (263, 109056), (284, 100992), (384, 74692), (426, 67328), (512, 56019), (526, 54528), (568, 50496), (768, 37346), (789, 36352), (852, 33664), (1052, 27264), (1136, 25248), (1536, 18673), (1578, 18176), (1704, 16832), (2104, 13632), (2272, 12624), (3156, 9088), (3408, 8416), (4208, 6816), (4544, 6312)]