21330771

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{863}}^1$

素因数の和:991

約数の個数: 32

約数和(自身を含む): 35831808

約数和(自身を除く): 14501037

約数列:

[1, 3, 7, 11, 21, 33, 77, 107, 231, 321, 749, 863, 1177, 2247, 2589, 3531, 6041, 8239, 9493, 18123, 24717, 28479, 66451, 92341, 199353, 277023, 646387, 1015751, 1939161, 3047253, 7110257, 21330771]

約数ペア:

[(1, 21330771), (3, 7110257), (7, 3047253), (11, 1939161), (21, 1015751), (33, 646387), (77, 277023), (107, 199353), (231, 92341), (321, 66451), (749, 28479), (863, 24717), (1177, 18123), (2247, 9493), (2589, 8239), (3531, 6041)]