256140976

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:291

約数の個数: 160

約数和(自身を含む): 659957760

約数和(自身を除く): 403816784

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 38, 47, 52, 56, 76, 91, 94, 104, 112, 133, 152, 182, 188, 197, 208, 247, 266, 304, 329, 364, 376, 394, 494, 532, 611, 658, 728, 752, 788, 893, 988, 1064, 1222, 1316, 1379, 1456, 1576, 1729, 1786, 1976, 2128, 2444, 2561, 2632, 2758, 3152, 3458, 3572, 3743, 3952, 4277, 4888, 5122, 5264, 5516, 6251, 6916, 7144, 7486, 8554, 9259, 9776, 10244, 11032, 11609, 12502, 13832, 14288, 14972, 17108, 17927, 18518, 20488, 22064, 23218, 25004, 26201, 27664, 29944, 34216, 35854, 37036, 40976, 46436, 48659, 50008, 52402, 59888, 64813, 68432, 71708, 74072, 81263, 92872, 97318, 100016, 104804, 120367, 129626, 143416, 148144, 162526, 175921, 185744, 194636, 209608, 240734, 259252, 286832, 325052, 340613, 351842, 389272, 419216, 481468, 518504, 650104, 681226, 703684, 778544, 842569, 962936, 1037008, 1231447, 1300208, 1362452, 1407368, 1685138, 1925872, 2286973, 2462894, 2724904, 2814736, 3370276, 4573946, 4925788, 5449808, 6740552, 9147892, 9851576, 13481104, 16008811, 18295784, 19703152, 32017622, 36591568, 64035244, 128070488, 256140976]

約数ペア:

[(1, 256140976), (2, 128070488), (4, 64035244), (7, 36591568), (8, 32017622), (13, 19703152), (14, 18295784), (16, 16008811), (19, 13481104), (26, 9851576), (28, 9147892), (38, 6740552), (47, 5449808), (52, 4925788), (56, 4573946), (76, 3370276), (91, 2814736), (94, 2724904), (104, 2462894), (112, 2286973), (133, 1925872), (152, 1685138), (182, 1407368), (188, 1362452), (197, 1300208), (208, 1231447), (247, 1037008), (266, 962936), (304, 842569), (329, 778544), (364, 703684), (376, 681226), (394, 650104), (494, 518504), (532, 481468), (611, 419216), (658, 389272), (728, 351842), (752, 340613), (788, 325052), (893, 286832), (988, 259252), (1064, 240734), (1222, 209608), (1316, 194636), (1379, 185744), (1456, 175921), (1576, 162526), (1729, 148144), (1786, 143416), (1976, 129626), (2128, 120367), (2444, 104804), (2561, 100016), (2632, 97318), (2758, 92872), (3152, 81263), (3458, 74072), (3572, 71708), (3743, 68432), (3952, 64813), (4277, 59888), (4888, 52402), (5122, 50008), (5264, 48659), (5516, 46436), (6251, 40976), (6916, 37036), (7144, 35854), (7486, 34216), (8554, 29944), (9259, 27664), (9776, 26201), (10244, 25004), (11032, 23218), (11609, 22064), (12502, 20488), (13832, 18518), (14288, 17927), (14972, 17108)]