21279027

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{367}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 35610624

約数和(自身を除く): 14331597

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 251, 367, 753, 1101, 1757, 2569, 2761, 4037, 5271, 7707, 8283, 12111, 19327, 28259, 57981, 84777, 92117, 276351, 644819, 1013287, 1934457, 3039861, 7093009, 21279027]

約数ペア:

[(1, 21279027), (3, 7093009), (7, 3039861), (11, 1934457), (21, 1013287), (33, 644819), (77, 276351), (231, 92117), (251, 84777), (367, 57981), (753, 28259), (1101, 19327), (1757, 12111), (2569, 8283), (2761, 7707), (4037, 5271)]