209209

素因数分解:

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

素因数の和:61

約数の個数: 24

約数和(自身を含む): 297920

約数和(自身を除く): 88711

約数列:

[1, 7, 11, 13, 19, 77, 91, 121, 133, 143, 209, 247, 847, 1001, 1463, 1573, 1729, 2299, 2717, 11011, 16093, 19019, 29887, 209209]

約数ペア:

[(1, 209209), (7, 29887), (11, 19019), (13, 16093), (19, 11011), (77, 2717), (91, 2299), (121, 1729), (133, 1573), (143, 1463), (209, 1001), (247, 847)]