81979984

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{547}}^1$

素因数の和:620

約数の個数: 80

約数和(自身を含む): 183470400

約数和(自身を除く): 101490416

約数列:

[1, 2, 4, 8, 16, 17, 19, 29, 34, 38, 58, 68, 76, 116, 136, 152, 232, 272, 304, 323, 464, 493, 547, 551, 646, 986, 1094, 1102, 1292, 1972, 2188, 2204, 2584, 3944, 4376, 4408, 5168, 7888, 8752, 8816, 9299, 9367, 10393, 15863, 18598, 18734, 20786, 31726, 37196, 37468, 41572, 63452, 74392, 74936, 83144, 126904, 148784, 149872, 166288, 176681, 253808, 269671, 301397, 353362, 539342, 602794, 706724, 1078684, 1205588, 1413448, 2157368, 2411176, 2826896, 4314736, 4822352, 5123749, 10247498, 20494996, 40989992, 81979984]

約数ペア:

[(1, 81979984), (2, 40989992), (4, 20494996), (8, 10247498), (16, 5123749), (17, 4822352), (19, 4314736), (29, 2826896), (34, 2411176), (38, 2157368), (58, 1413448), (68, 1205588), (76, 1078684), (116, 706724), (136, 602794), (152, 539342), (232, 353362), (272, 301397), (304, 269671), (323, 253808), (464, 176681), (493, 166288), (547, 149872), (551, 148784), (646, 126904), (986, 83144), (1094, 74936), (1102, 74392), (1292, 63452), (1972, 41572), (2188, 37468), (2204, 37196), (2584, 31726), (3944, 20786), (4376, 18734), (4408, 18598), (5168, 15863), (7888, 10393), (8752, 9367), (8816, 9299)]