21395712

素因数分解:

$2^8\times 3^1\times {\mathrm{13}}^1\times {\mathrm{2143}}^1$

素因数の和:2175

約数の個数: 72

約数和(自身を含む): 61352704

約数和(自身を除く): 39956992

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 64, 78, 96, 104, 128, 156, 192, 208, 256, 312, 384, 416, 624, 768, 832, 1248, 1664, 2143, 2496, 3328, 4286, 4992, 6429, 8572, 9984, 12858, 17144, 25716, 27859, 34288, 51432, 55718, 68576, 83577, 102864, 111436, 137152, 167154, 205728, 222872, 274304, 334308, 411456, 445744, 548608, 668616, 822912, 891488, 1337232, 1645824, 1782976, 2674464, 3565952, 5348928, 7131904, 10697856, 21395712]

約数ペア:

[(1, 21395712), (2, 10697856), (3, 7131904), (4, 5348928), (6, 3565952), (8, 2674464), (12, 1782976), (13, 1645824), (16, 1337232), (24, 891488), (26, 822912), (32, 668616), (39, 548608), (48, 445744), (52, 411456), (64, 334308), (78, 274304), (96, 222872), (104, 205728), (128, 167154), (156, 137152), (192, 111436), (208, 102864), (256, 83577), (312, 68576), (384, 55718), (416, 51432), (624, 34288), (768, 27859), (832, 25716), (1248, 17144), (1664, 12858), (2143, 9984), (2496, 8572), (3328, 6429), (4286, 4992)]