81341008

素因数分解:

$2^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:332

約数の個数: 80

約数和(自身を含む): 187059456

約数和(自身を除く): 105718448

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 53, 56, 71, 106, 112, 142, 193, 212, 284, 371, 386, 424, 497, 568, 742, 772, 848, 994, 1136, 1351, 1484, 1544, 1988, 2702, 2968, 3088, 3763, 3976, 5404, 5936, 7526, 7952, 10229, 10808, 13703, 15052, 20458, 21616, 26341, 27406, 30104, 40916, 52682, 54812, 60208, 71603, 81832, 95921, 105364, 109624, 143206, 163664, 191842, 210728, 219248, 286412, 383684, 421456, 572824, 726259, 767368, 1145648, 1452518, 1534736, 2905036, 5083813, 5810072, 10167626, 11620144, 20335252, 40670504, 81341008]

約数ペア:

[(1, 81341008), (2, 40670504), (4, 20335252), (7, 11620144), (8, 10167626), (14, 5810072), (16, 5083813), (28, 2905036), (53, 1534736), (56, 1452518), (71, 1145648), (106, 767368), (112, 726259), (142, 572824), (193, 421456), (212, 383684), (284, 286412), (371, 219248), (386, 210728), (424, 191842), (497, 163664), (568, 143206), (742, 109624), (772, 105364), (848, 95921), (994, 81832), (1136, 71603), (1351, 60208), (1484, 54812), (1544, 52682), (1988, 40916), (2702, 30104), (2968, 27406), (3088, 26341), (3763, 21616), (3976, 20458), (5404, 15052), (5936, 13703), (7526, 10808), (7952, 10229)]