20480512

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:229

約数の個数: 80

約数和(自身を含む): 46918872

約数和(自身を除く): 26438360

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 64, 68, 104, 128, 136, 181, 208, 221, 256, 272, 362, 416, 442, 512, 544, 724, 832, 884, 1088, 1448, 1664, 1768, 2176, 2353, 2896, 3077, 3328, 3536, 4352, 4706, 5792, 6154, 6656, 7072, 8704, 9412, 11584, 12308, 14144, 18824, 23168, 24616, 28288, 37648, 40001, 46336, 49232, 56576, 75296, 80002, 92672, 98464, 113152, 150592, 160004, 196928, 301184, 320008, 393856, 602368, 640016, 787712, 1204736, 1280032, 1575424, 2560064, 5120128, 10240256, 20480512]

約数ペア:

[(1, 20480512), (2, 10240256), (4, 5120128), (8, 2560064), (13, 1575424), (16, 1280032), (17, 1204736), (26, 787712), (32, 640016), (34, 602368), (52, 393856), (64, 320008), (68, 301184), (104, 196928), (128, 160004), (136, 150592), (181, 113152), (208, 98464), (221, 92672), (256, 80002), (272, 75296), (362, 56576), (416, 49232), (442, 46336), (512, 40001), (544, 37648), (724, 28288), (832, 24616), (884, 23168), (1088, 18824), (1448, 14144), (1664, 12308), (1768, 11584), (2176, 9412), (2353, 8704), (2896, 7072), (3077, 6656), (3328, 6154), (3536, 5792), (4352, 4706)]