256256

素因数分解:

$2^8\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1$

素因数の和:47

約数の個数: 72

約数和(自身を含む): 686784

約数和(自身を除く): 430528

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 32, 44, 52, 56, 64, 77, 88, 91, 104, 112, 128, 143, 154, 176, 182, 208, 224, 256, 286, 308, 352, 364, 416, 448, 572, 616, 704, 728, 832, 896, 1001, 1144, 1232, 1408, 1456, 1664, 1792, 2002, 2288, 2464, 2816, 2912, 3328, 4004, 4576, 4928, 5824, 8008, 9152, 9856, 11648, 16016, 18304, 19712, 23296, 32032, 36608, 64064, 128128, 256256]

約数ペア:

[(1, 256256), (2, 128128), (4, 64064), (7, 36608), (8, 32032), (11, 23296), (13, 19712), (14, 18304), (16, 16016), (22, 11648), (26, 9856), (28, 9152), (32, 8008), (44, 5824), (52, 4928), (56, 4576), (64, 4004), (77, 3328), (88, 2912), (91, 2816), (104, 2464), (112, 2288), (128, 2002), (143, 1792), (154, 1664), (176, 1456), (182, 1408), (208, 1232), (224, 1144), (256, 1001), (286, 896), (308, 832), (352, 728), (364, 704), (416, 616), (448, 572)]