20429577

素因数分解:

$3^4\times 7^1\times {\mathrm{137}}^1\times {\mathrm{263}}^1$

素因数の和:419

約数の個数: 40

約数和(自身を含む): 35266176

約数和(自身を除く): 14836599

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 137, 189, 263, 411, 567, 789, 959, 1233, 1841, 2367, 2877, 3699, 5523, 7101, 8631, 11097, 16569, 21303, 25893, 36031, 49707, 77679, 108093, 149121, 252217, 324279, 756651, 972837, 2269953, 2918511, 6809859, 20429577]

約数ペア:

[(1, 20429577), (3, 6809859), (7, 2918511), (9, 2269953), (21, 972837), (27, 756651), (63, 324279), (81, 252217), (137, 149121), (189, 108093), (263, 77679), (411, 49707), (567, 36031), (789, 25893), (959, 21303), (1233, 16569), (1841, 11097), (2367, 8631), (2877, 7101), (3699, 5523)]