20521168

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{10099}}^1$

素因数の和:10234

約数の個数: 20

約数和(自身を含む): 40076800

約数和(自身を除く): 19555632

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 10099, 20198, 40396, 80792, 161584, 1282573, 2565146, 5130292, 10260584, 20521168]

約数ペア:

[(1, 20521168), (2, 10260584), (4, 5130292), (8, 2565146), (16, 1282573), (127, 161584), (254, 80792), (508, 40396), (1016, 20198), (2032, 10099)]