28657776

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^2$

素因数の和:171

約数の個数: 120

約数和(自身を含む): 90410880

約数和(自身を除く): 61753104

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 19, 21, 24, 28, 38, 42, 48, 56, 57, 67, 76, 84, 112, 114, 133, 134, 152, 168, 201, 228, 266, 268, 304, 336, 399, 402, 456, 469, 532, 536, 798, 804, 912, 938, 1064, 1072, 1273, 1407, 1596, 1608, 1876, 2128, 2546, 2814, 3192, 3216, 3752, 3819, 4489, 5092, 5628, 6384, 7504, 7638, 8911, 8978, 10184, 11256, 13467, 15276, 17822, 17956, 20368, 22512, 26733, 26934, 30552, 31423, 35644, 35912, 53466, 53868, 61104, 62846, 71288, 71824, 85291, 94269, 106932, 107736, 125692, 142576, 170582, 188538, 213864, 215472, 251384, 255873, 341164, 377076, 427728, 502768, 511746, 597037, 682328, 754152, 1023492, 1194074, 1364656, 1508304, 1791111, 2046984, 2388148, 3582222, 4093968, 4776296, 7164444, 9552592, 14328888, 28657776]

約数ペア:

[(1, 28657776), (2, 14328888), (3, 9552592), (4, 7164444), (6, 4776296), (7, 4093968), (8, 3582222), (12, 2388148), (14, 2046984), (16, 1791111), (19, 1508304), (21, 1364656), (24, 1194074), (28, 1023492), (38, 754152), (42, 682328), (48, 597037), (56, 511746), (57, 502768), (67, 427728), (76, 377076), (84, 341164), (112, 255873), (114, 251384), (133, 215472), (134, 213864), (152, 188538), (168, 170582), (201, 142576), (228, 125692), (266, 107736), (268, 106932), (304, 94269), (336, 85291), (399, 71824), (402, 71288), (456, 62846), (469, 61104), (532, 53868), (536, 53466), (798, 35912), (804, 35644), (912, 31423), (938, 30552), (1064, 26934), (1072, 26733), (1273, 22512), (1407, 20368), (1596, 17956), (1608, 17822), (1876, 15276), (2128, 13467), (2546, 11256), (2814, 10184), (3192, 8978), (3216, 8911), (3752, 7638), (3819, 7504), (4489, 6384), (5092, 5628)]