257159680

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1$

素因数の和:370

約数の個数: 160

約数和(自身を含む): 689420160

約数和(自身を除く): 432260480

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, 512, 544, 608, 622, 640, 646, 680, 760, 1088, 1216, 1244, 1280, 1292, 1360, 1520, 1555, 1615, 2176, 2432, 2488, 2560, 2584, 2720, 3040, 3110, 3230, 4352, 4864, 4976, 5168, 5287, 5440, 5909, 6080, 6220, 6460, 8704, 9728, 9952, 10336, 10574, 10880, 11818, 12160, 12440, 12920, 19904, 20672, 21148, 21760, 23636, 24320, 24880, 25840, 26435, 29545, 39808, 41344, 42296, 43520, 47272, 48640, 49760, 51680, 52870, 59090, 79616, 82688, 84592, 94544, 99520, 100453, 103360, 105740, 118180, 159232, 165376, 169184, 189088, 199040, 200906, 206720, 211480, 236360, 338368, 378176, 398080, 401812, 413440, 422960, 472720, 502265, 676736, 756352, 796160, 803624, 826880, 845920, 945440, 1004530, 1353472, 1512704, 1607248, 1691840, 1890880, 2009060, 2706944, 3025408, 3214496, 3383680, 3781760, 4018120, 6428992, 6767360, 7563520, 8036240, 12857984, 13534720, 15127040, 16072480, 25715968, 32144960, 51431936, 64289920, 128579840, 257159680]

約数ペア:

[(1, 257159680), (2, 128579840), (4, 64289920), (5, 51431936), (8, 32144960), (10, 25715968), (16, 16072480), (17, 15127040), (19, 13534720), (20, 12857984), (32, 8036240), (34, 7563520), (38, 6767360), (40, 6428992), (64, 4018120), (68, 3781760), (76, 3383680), (80, 3214496), (85, 3025408), (95, 2706944), (128, 2009060), (136, 1890880), (152, 1691840), (160, 1607248), (170, 1512704), (190, 1353472), (256, 1004530), (272, 945440), (304, 845920), (311, 826880), (320, 803624), (323, 796160), (340, 756352), (380, 676736), (512, 502265), (544, 472720), (608, 422960), (622, 413440), (640, 401812), (646, 398080), (680, 378176), (760, 338368), (1088, 236360), (1216, 211480), (1244, 206720), (1280, 200906), (1292, 199040), (1360, 189088), (1520, 169184), (1555, 165376), (1615, 159232), (2176, 118180), (2432, 105740), (2488, 103360), (2560, 100453), (2584, 99520), (2720, 94544), (3040, 84592), (3110, 82688), (3230, 79616), (4352, 59090), (4864, 52870), (4976, 51680), (5168, 49760), (5287, 48640), (5440, 47272), (5909, 43520), (6080, 42296), (6220, 41344), (6460, 39808), (8704, 29545), (9728, 26435), (9952, 25840), (10336, 24880), (10574, 24320), (10880, 23636), (11818, 21760), (12160, 21148), (12440, 20672), (12920, 19904)]