19038019

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1$

素因数の和:81

約数の個数: 54

約数和(自身を含む): 27746460

約数和(自身を除く): 8708441

約数列:

[1, 7, 11, 13, 19, 49, 77, 91, 121, 133, 143, 169, 209, 247, 539, 637, 847, 931, 1001, 1183, 1463, 1573, 1729, 1859, 2299, 2717, 3211, 5929, 7007, 8281, 10241, 11011, 12103, 13013, 16093, 19019, 20449, 22477, 29887, 35321, 77077, 91091, 112651, 133133, 143143, 157339, 209209, 247247, 388531, 1002001, 1464463, 1730729, 2719717, 19038019]

約数ペア:

[(1, 19038019), (7, 2719717), (11, 1730729), (13, 1464463), (19, 1002001), (49, 388531), (77, 247247), (91, 209209), (121, 157339), (133, 143143), (143, 133133), (169, 112651), (209, 91091), (247, 77077), (539, 35321), (637, 29887), (847, 22477), (931, 20449), (1001, 19019), (1183, 16093), (1463, 13013), (1573, 12103), (1729, 11011), (1859, 10241), (2299, 8281), (2717, 7007), (3211, 5929)]