128579840

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1$

素因数の和:368

約数の個数: 144

約数和(自身を含む): 344373120

約数和(自身を除く): 215793280

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 32, 34, 38, 40, 64, 68, 76, 80, 85, 95, 128, 136, 152, 160, 170, 190, 256, 272, 304, 311, 320, 323, 340, 380, 544, 608, 622, 640, 646, 680, 760, 1088, 1216, 1244, 1280, 1292, 1360, 1520, 1555, 1615, 2176, 2432, 2488, 2584, 2720, 3040, 3110, 3230, 4352, 4864, 4976, 5168, 5287, 5440, 5909, 6080, 6220, 6460, 9952, 10336, 10574, 10880, 11818, 12160, 12440, 12920, 19904, 20672, 21148, 21760, 23636, 24320, 24880, 25840, 26435, 29545, 39808, 41344, 42296, 47272, 49760, 51680, 52870, 59090, 79616, 82688, 84592, 94544, 99520, 100453, 103360, 105740, 118180, 169184, 189088, 199040, 200906, 206720, 211480, 236360, 338368, 378176, 398080, 401812, 413440, 422960, 472720, 502265, 676736, 756352, 803624, 845920, 945440, 1004530, 1353472, 1512704, 1607248, 1691840, 1890880, 2009060, 3214496, 3383680, 3781760, 4018120, 6428992, 6767360, 7563520, 8036240, 12857984, 16072480, 25715968, 32144960, 64289920, 128579840]

約数ペア:

[(1, 128579840), (2, 64289920), (4, 32144960), (5, 25715968), (8, 16072480), (10, 12857984), (16, 8036240), (17, 7563520), (19, 6767360), (20, 6428992), (32, 4018120), (34, 3781760), (38, 3383680), (40, 3214496), (64, 2009060), (68, 1890880), (76, 1691840), (80, 1607248), (85, 1512704), (95, 1353472), (128, 1004530), (136, 945440), (152, 845920), (160, 803624), (170, 756352), (190, 676736), (256, 502265), (272, 472720), (304, 422960), (311, 413440), (320, 401812), (323, 398080), (340, 378176), (380, 338368), (544, 236360), (608, 211480), (622, 206720), (640, 200906), (646, 199040), (680, 189088), (760, 169184), (1088, 118180), (1216, 105740), (1244, 103360), (1280, 100453), (1292, 99520), (1360, 94544), (1520, 84592), (1555, 82688), (1615, 79616), (2176, 59090), (2432, 52870), (2488, 51680), (2584, 49760), (2720, 47272), (3040, 42296), (3110, 41344), (3230, 39808), (4352, 29545), (4864, 26435), (4976, 25840), (5168, 24880), (5287, 24320), (5440, 23636), (5909, 21760), (6080, 21148), (6220, 20672), (6460, 19904), (9952, 12920), (10336, 12440), (10574, 12160), (10880, 11818)]