21668216

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{62989}}^1$

素因数の和:63038

約数の個数: 16

約数和(自身を含む): 41573400

約数和(自身を除く): 19905184

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 62989, 125978, 251956, 503912, 2708527, 5417054, 10834108, 21668216]

約数ペア:

[(1, 21668216), (2, 10834108), (4, 5417054), (8, 2708527), (43, 503912), (86, 251956), (172, 125978), (344, 62989)]