21664720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3517}}^1$

素因数の和:3548

約数の個数: 80

約数和(自身を含む): 62817408

約数和(自身を除く): 41152688

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3517, 6160, 7034, 14068, 17585, 24619, 28136, 35170, 38687, 49238, 56272, 70340, 77374, 98476, 123095, 140680, 154748, 193435, 196952, 246190, 270809, 281360, 309496, 386870, 393904, 492380, 541618, 618992, 773740, 984760, 1083236, 1354045, 1547480, 1969520, 2166472, 2708090, 3094960, 4332944, 5416180, 10832360, 21664720]

約数ペア:

[(1, 21664720), (2, 10832360), (4, 5416180), (5, 4332944), (7, 3094960), (8, 2708090), (10, 2166472), (11, 1969520), (14, 1547480), (16, 1354045), (20, 1083236), (22, 984760), (28, 773740), (35, 618992), (40, 541618), (44, 492380), (55, 393904), (56, 386870), (70, 309496), (77, 281360), (80, 270809), (88, 246190), (110, 196952), (112, 193435), (140, 154748), (154, 140680), (176, 123095), (220, 98476), (280, 77374), (308, 70340), (385, 56272), (440, 49238), (560, 38687), (616, 35170), (770, 28136), (880, 24619), (1232, 17585), (1540, 14068), (3080, 7034), (3517, 6160)]