19945178

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^2$

素因数の和:310

約数の個数: 24

約数和(自身を含む): 33392736

約数和(自身を除く): 13447558

約数列:

[1, 2, 11, 22, 71, 113, 142, 226, 781, 1243, 1562, 2486, 8023, 12769, 16046, 25538, 88253, 140459, 176506, 280918, 906599, 1813198, 9972589, 19945178]

約数ペア:

[(1, 19945178), (2, 9972589), (11, 1813198), (22, 906599), (71, 280918), (113, 176506), (142, 140459), (226, 88253), (781, 25538), (1243, 16046), (1562, 12769), (2486, 8023)]