20157740919

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{719}}^1\times {\mathrm{3889}}^1$

素因数の和:4709

約数の個数: 40

約数和(自身を含む): 30500712000

約数和(自身を除く): 10342971081

約数列:

[1, 3, 9, 27, 81, 89, 267, 719, 801, 2157, 2403, 3889, 6471, 7209, 11667, 19413, 35001, 58239, 63991, 105003, 191973, 315009, 346121, 575919, 1038363, 1727757, 2796191, 3115089, 5183271, 8388573, 9345267, 25165719, 28035801, 75497157, 226491471, 248860999, 746582997, 2239748991, 6719246973, 20157740919]

約数ペア:

[(1, 20157740919), (3, 6719246973), (9, 2239748991), (27, 746582997), (81, 248860999), (89, 226491471), (267, 75497157), (719, 28035801), (801, 25165719), (2157, 9345267), (2403, 8388573), (3889, 5183271), (6471, 3115089), (7209, 2796191), (11667, 1727757), (19413, 1038363), (35001, 575919), (58239, 346121), (63991, 315009), (105003, 191973)]