81399552

素因数分解:

$2^8\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:326

約数の個数: 144

約数和(自身を含む): 241747968

約数和(自身を除く): 160348416

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 31, 32, 39, 48, 52, 62, 64, 78, 93, 96, 104, 124, 128, 156, 186, 192, 208, 248, 256, 263, 312, 372, 384, 403, 416, 496, 526, 624, 744, 768, 789, 806, 832, 992, 1052, 1209, 1248, 1488, 1578, 1612, 1664, 1984, 2104, 2418, 2496, 2976, 3156, 3224, 3328, 3419, 3968, 4208, 4836, 4992, 5952, 6312, 6448, 6838, 7936, 8153, 8416, 9672, 9984, 10257, 11904, 12624, 12896, 13676, 16306, 16832, 19344, 20514, 23808, 24459, 25248, 25792, 27352, 32612, 33664, 38688, 41028, 48918, 50496, 51584, 54704, 65224, 67328, 77376, 82056, 97836, 100992, 103168, 105989, 109408, 130448, 154752, 164112, 195672, 201984, 211978, 218816, 260896, 309504, 317967, 328224, 391344, 423956, 437632, 521792, 635934, 656448, 782688, 847912, 875264, 1043584, 1271868, 1312896, 1565376, 1695824, 2087168, 2543736, 2625792, 3130752, 3391648, 5087472, 6261504, 6783296, 10174944, 13566592, 20349888, 27133184, 40699776, 81399552]

約数ペア:

[(1, 81399552), (2, 40699776), (3, 27133184), (4, 20349888), (6, 13566592), (8, 10174944), (12, 6783296), (13, 6261504), (16, 5087472), (24, 3391648), (26, 3130752), (31, 2625792), (32, 2543736), (39, 2087168), (48, 1695824), (52, 1565376), (62, 1312896), (64, 1271868), (78, 1043584), (93, 875264), (96, 847912), (104, 782688), (124, 656448), (128, 635934), (156, 521792), (186, 437632), (192, 423956), (208, 391344), (248, 328224), (256, 317967), (263, 309504), (312, 260896), (372, 218816), (384, 211978), (403, 201984), (416, 195672), (496, 164112), (526, 154752), (624, 130448), (744, 109408), (768, 105989), (789, 103168), (806, 100992), (832, 97836), (992, 82056), (1052, 77376), (1209, 67328), (1248, 65224), (1488, 54704), (1578, 51584), (1612, 50496), (1664, 48918), (1984, 41028), (2104, 38688), (2418, 33664), (2496, 32612), (2976, 27352), (3156, 25792), (3224, 25248), (3328, 24459), (3419, 23808), (3968, 20514), (4208, 19344), (4836, 16832), (4992, 16306), (5952, 13676), (6312, 12896), (6448, 12624), (6838, 11904), (7936, 10257), (8153, 9984), (8416, 9672)]