21086912

素因数分解:

$2^6\times 7^1\times {\mathrm{11}}^2\times {\mathrm{389}}^1$

素因数の和:430

約数の個数: 84

約数和(自身を含む): 52699920

約数和(自身を除く): 31613008

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 121, 154, 176, 224, 242, 308, 352, 389, 448, 484, 616, 704, 778, 847, 968, 1232, 1556, 1694, 1936, 2464, 2723, 3112, 3388, 3872, 4279, 4928, 5446, 6224, 6776, 7744, 8558, 10892, 12448, 13552, 17116, 21784, 24896, 27104, 29953, 34232, 43568, 47069, 54208, 59906, 68464, 87136, 94138, 119812, 136928, 174272, 188276, 239624, 273856, 329483, 376552, 479248, 658966, 753104, 958496, 1317932, 1506208, 1916992, 2635864, 3012416, 5271728, 10543456, 21086912]

約数ペア:

[(1, 21086912), (2, 10543456), (4, 5271728), (7, 3012416), (8, 2635864), (11, 1916992), (14, 1506208), (16, 1317932), (22, 958496), (28, 753104), (32, 658966), (44, 479248), (56, 376552), (64, 329483), (77, 273856), (88, 239624), (112, 188276), (121, 174272), (154, 136928), (176, 119812), (224, 94138), (242, 87136), (308, 68464), (352, 59906), (389, 54208), (448, 47069), (484, 43568), (616, 34232), (704, 29953), (778, 27104), (847, 24896), (968, 21784), (1232, 17116), (1556, 13552), (1694, 12448), (1936, 10892), (2464, 8558), (2723, 7744), (3112, 6776), (3388, 6224), (3872, 5446), (4279, 4928)]