256489520

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{1109}}^1$

素因数の和:1195

約数の個数: 120

約数和(自身を含む): 706093200

約数和(自身を除く): 449603680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 59, 70, 80, 98, 112, 118, 140, 196, 236, 245, 280, 295, 392, 413, 472, 490, 560, 590, 784, 826, 944, 980, 1109, 1180, 1652, 1960, 2065, 2218, 2360, 2891, 3304, 3920, 4130, 4436, 4720, 5545, 5782, 6608, 7763, 8260, 8872, 11090, 11564, 14455, 15526, 16520, 17744, 22180, 23128, 28910, 31052, 33040, 38815, 44360, 46256, 54341, 57820, 62104, 65431, 77630, 88720, 108682, 115640, 124208, 130862, 155260, 217364, 231280, 261724, 271705, 310520, 327155, 434728, 458017, 523448, 543410, 621040, 654310, 869456, 916034, 1046896, 1086820, 1308620, 1832068, 2173640, 2290085, 2617240, 3206119, 3664136, 4347280, 4580170, 5234480, 6412238, 7328272, 9160340, 12824476, 16030595, 18320680, 25648952, 32061190, 36641360, 51297904, 64122380, 128244760, 256489520]

約数ペア:

[(1, 256489520), (2, 128244760), (4, 64122380), (5, 51297904), (7, 36641360), (8, 32061190), (10, 25648952), (14, 18320680), (16, 16030595), (20, 12824476), (28, 9160340), (35, 7328272), (40, 6412238), (49, 5234480), (56, 4580170), (59, 4347280), (70, 3664136), (80, 3206119), (98, 2617240), (112, 2290085), (118, 2173640), (140, 1832068), (196, 1308620), (236, 1086820), (245, 1046896), (280, 916034), (295, 869456), (392, 654310), (413, 621040), (472, 543410), (490, 523448), (560, 458017), (590, 434728), (784, 327155), (826, 310520), (944, 271705), (980, 261724), (1109, 231280), (1180, 217364), (1652, 155260), (1960, 130862), (2065, 124208), (2218, 115640), (2360, 108682), (2891, 88720), (3304, 77630), (3920, 65431), (4130, 62104), (4436, 57820), (4720, 54341), (5545, 46256), (5782, 44360), (6608, 38815), (7763, 33040), (8260, 31052), (8872, 28910), (11090, 23128), (11564, 22180), (14455, 17744), (15526, 16520)]