21357259641

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{239}}^1\times {\mathrm{342379}}^1$

素因数の和:342653

約数の個数: 24

約数和(自身を含む): 32046768000

約数和(自身を除く): 10689508359

約数列:

[1, 3, 9, 29, 87, 239, 261, 717, 2151, 6931, 20793, 62379, 342379, 1027137, 3081411, 9928991, 29786973, 81828581, 89360919, 245485743, 736457229, 2373028849, 7119086547, 21357259641]

約数ペア:

[(1, 21357259641), (3, 7119086547), (9, 2373028849), (29, 736457229), (87, 245485743), (239, 89360919), (261, 81828581), (717, 29786973), (2151, 9928991), (6931, 3081411), (20793, 1027137), (62379, 342379)]