20522672

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{383}}^1$

素因数の和:605

約数の個数: 40

約数和(自身を含む): 42425856

約数和(自身を除く): 21903184

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 197, 272, 383, 394, 766, 788, 1532, 1576, 3064, 3152, 3349, 6128, 6511, 6698, 13022, 13396, 26044, 26792, 52088, 53584, 75451, 104176, 150902, 301804, 603608, 1207216, 1282667, 2565334, 5130668, 10261336, 20522672]

約数ペア:

[(1, 20522672), (2, 10261336), (4, 5130668), (8, 2565334), (16, 1282667), (17, 1207216), (34, 603608), (68, 301804), (136, 150902), (197, 104176), (272, 75451), (383, 53584), (394, 52088), (766, 26792), (788, 26044), (1532, 13396), (1576, 13022), (3064, 6698), (3152, 6511), (3349, 6128)]