21022012

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 42223104

約数和(自身を除く): 21201092

約数列:

[1, 2, 4, 11, 22, 41, 43, 44, 82, 86, 164, 172, 271, 451, 473, 542, 902, 946, 1084, 1763, 1804, 1892, 2981, 3526, 5962, 7052, 11111, 11653, 11924, 19393, 22222, 23306, 38786, 44444, 46612, 77572, 122221, 128183, 244442, 256366, 477773, 488884, 512732, 955546, 1911092, 5255503, 10511006, 21022012]

約数ペア:

[(1, 21022012), (2, 10511006), (4, 5255503), (11, 1911092), (22, 955546), (41, 512732), (43, 488884), (44, 477773), (82, 256366), (86, 244442), (164, 128183), (172, 122221), (271, 77572), (451, 46612), (473, 44444), (542, 38786), (902, 23306), (946, 22222), (1084, 19393), (1763, 11924), (1804, 11653), (1892, 11111), (2981, 7052), (3526, 5962)]