21165584

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{241}}^1\times {\mathrm{499}}^1$

素因数の和:759

約数の個数: 40

約数和(自身を含む): 45012000

約数和(自身を除く): 23846416

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 241, 482, 499, 964, 998, 1928, 1996, 2651, 3856, 3992, 5302, 5489, 7984, 10604, 10978, 21208, 21956, 42416, 43912, 87824, 120259, 240518, 481036, 962072, 1322849, 1924144, 2645698, 5291396, 10582792, 21165584]

約数ペア:

[(1, 21165584), (2, 10582792), (4, 5291396), (8, 2645698), (11, 1924144), (16, 1322849), (22, 962072), (44, 481036), (88, 240518), (176, 120259), (241, 87824), (482, 43912), (499, 42416), (964, 21956), (998, 21208), (1928, 10978), (1996, 10604), (2651, 7984), (3856, 5489), (3992, 5302)]