21122816

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{577}}^1$

素因数の和:617

約数の個数: 72

約数和(自身を含む): 49620144

約数和(自身を除く): 28497328

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 64, 88, 104, 128, 143, 176, 208, 256, 286, 352, 416, 572, 577, 704, 832, 1144, 1154, 1408, 1664, 2288, 2308, 2816, 3328, 4576, 4616, 6347, 7501, 9152, 9232, 12694, 15002, 18304, 18464, 25388, 30004, 36608, 36928, 50776, 60008, 73856, 82511, 101552, 120016, 147712, 165022, 203104, 240032, 330044, 406208, 480064, 660088, 812416, 960128, 1320176, 1624832, 1920256, 2640352, 5280704, 10561408, 21122816]

約数ペア:

[(1, 21122816), (2, 10561408), (4, 5280704), (8, 2640352), (11, 1920256), (13, 1624832), (16, 1320176), (22, 960128), (26, 812416), (32, 660088), (44, 480064), (52, 406208), (64, 330044), (88, 240032), (104, 203104), (128, 165022), (143, 147712), (176, 120016), (208, 101552), (256, 82511), (286, 73856), (352, 60008), (416, 50776), (572, 36928), (577, 36608), (704, 30004), (832, 25388), (1144, 18464), (1154, 18304), (1408, 15002), (1664, 12694), (2288, 9232), (2308, 9152), (2816, 7501), (3328, 6347), (4576, 4616)]