21690394

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1$

素因数の和:366

約数の個数: 32

約数和(自身を含む): 36832320

約数和(自身を除く): 15141926

約数列:

[1, 2, 11, 22, 41, 82, 139, 173, 278, 346, 451, 902, 1529, 1903, 3058, 3806, 5699, 7093, 11398, 14186, 24047, 48094, 62689, 78023, 125378, 156046, 264517, 529034, 985927, 1971854, 10845197, 21690394]

約数ペア:

[(1, 21690394), (2, 10845197), (11, 1971854), (22, 985927), (41, 529034), (82, 264517), (139, 156046), (173, 125378), (278, 78023), (346, 62689), (451, 48094), (902, 24047), (1529, 14186), (1903, 11398), (3058, 7093), (3806, 5699)]