21041216

素因数分解:

$2^6\times 7^1\times {\mathrm{67}}^1\times {\mathrm{701}}^1$

素因数の和:787

約数の個数: 56

約数和(自身を含む): 48499776

約数和(自身を除く): 27458560

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 67, 112, 134, 224, 268, 448, 469, 536, 701, 938, 1072, 1402, 1876, 2144, 2804, 3752, 4288, 4907, 5608, 7504, 9814, 11216, 15008, 19628, 22432, 30016, 39256, 44864, 46967, 78512, 93934, 157024, 187868, 314048, 328769, 375736, 657538, 751472, 1315076, 1502944, 2630152, 3005888, 5260304, 10520608, 21041216]

約数ペア:

[(1, 21041216), (2, 10520608), (4, 5260304), (7, 3005888), (8, 2630152), (14, 1502944), (16, 1315076), (28, 751472), (32, 657538), (56, 375736), (64, 328769), (67, 314048), (112, 187868), (134, 157024), (224, 93934), (268, 78512), (448, 46967), (469, 44864), (536, 39256), (701, 30016), (938, 22432), (1072, 19628), (1402, 15008), (1876, 11216), (2144, 9814), (2804, 7504), (3752, 5608), (4288, 4907)]