21196208

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{1451}}^1$

素因数の和:1553

約数の個数: 40

約数和(自身を含む): 45372096

約数和(自身を除く): 24175888

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 83, 88, 166, 176, 332, 664, 913, 1328, 1451, 1826, 2902, 3652, 5804, 7304, 11608, 14608, 15961, 23216, 31922, 63844, 120433, 127688, 240866, 255376, 481732, 963464, 1324763, 1926928, 2649526, 5299052, 10598104, 21196208]

約数ペア:

[(1, 21196208), (2, 10598104), (4, 5299052), (8, 2649526), (11, 1926928), (16, 1324763), (22, 963464), (44, 481732), (83, 255376), (88, 240866), (166, 127688), (176, 120433), (332, 63844), (664, 31922), (913, 23216), (1328, 15961), (1451, 14608), (1826, 11608), (2902, 7304), (3652, 5804)]