138965981

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^2$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 190671360

約数和(自身を除く): 51705379

約数列:

[1, 7, 11, 19, 43, 47, 77, 133, 209, 301, 329, 473, 517, 817, 893, 1463, 2021, 2209, 3311, 3619, 5719, 6251, 8987, 9823, 14147, 15463, 22231, 24299, 38399, 41971, 62909, 68761, 94987, 155617, 170093, 268793, 293797, 422389, 461681, 664909, 1044857, 1804753, 2956723, 3231767, 7313999, 12633271, 19852283, 138965981]

約数ペア:

[(1, 138965981), (7, 19852283), (11, 12633271), (19, 7313999), (43, 3231767), (47, 2956723), (77, 1804753), (133, 1044857), (209, 664909), (301, 461681), (329, 422389), (473, 293797), (517, 268793), (817, 170093), (893, 155617), (1463, 94987), (2021, 68761), (2209, 62909), (3311, 41971), (3619, 38399), (5719, 24299), (6251, 22231), (8987, 15463), (9823, 14147)]