261771328

素因数分解:

$2^6\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6421}}^1$

素因数の和:6460

約数の個数: 84

約数和(自身を含む): 650844012

約数和(自身を除く): 389072684

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 49, 52, 56, 64, 91, 98, 104, 112, 182, 196, 208, 224, 364, 392, 416, 448, 637, 728, 784, 832, 1274, 1456, 1568, 2548, 2912, 3136, 5096, 5824, 6421, 10192, 12842, 20384, 25684, 40768, 44947, 51368, 83473, 89894, 102736, 166946, 179788, 205472, 314629, 333892, 359576, 410944, 584311, 629258, 667784, 719152, 1168622, 1258516, 1335568, 1438304, 2337244, 2517032, 2671136, 2876608, 4090177, 4674488, 5034064, 5342272, 8180354, 9348976, 10068128, 16360708, 18697952, 20136256, 32721416, 37395904, 65442832, 130885664, 261771328]

約数ペア:

[(1, 261771328), (2, 130885664), (4, 65442832), (7, 37395904), (8, 32721416), (13, 20136256), (14, 18697952), (16, 16360708), (26, 10068128), (28, 9348976), (32, 8180354), (49, 5342272), (52, 5034064), (56, 4674488), (64, 4090177), (91, 2876608), (98, 2671136), (104, 2517032), (112, 2337244), (182, 1438304), (196, 1335568), (208, 1258516), (224, 1168622), (364, 719152), (392, 667784), (416, 629258), (448, 584311), (637, 410944), (728, 359576), (784, 333892), (832, 314629), (1274, 205472), (1456, 179788), (1568, 166946), (2548, 102736), (2912, 89894), (3136, 83473), (5096, 51368), (5824, 44947), (6421, 40768), (10192, 25684), (12842, 20384)]