20408049788

素因数分解:

$2^2\times 7^2\times {\mathrm{661}}^1\times {\mathrm{157523}}^1$

素因数の和:158202

約数の個数: 36

約数和(自身を含む): 41608074312

約数和(自身を除く): 21200024524

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 661, 1322, 2644, 4627, 9254, 18508, 32389, 64778, 129556, 157523, 315046, 630092, 1102661, 2205322, 4410644, 7718627, 15437254, 30874508, 104122703, 208245406, 416490812, 728858921, 1457717842, 2915435684, 5102012447, 10204024894, 20408049788]

約数ペア:

[(1, 20408049788), (2, 10204024894), (4, 5102012447), (7, 2915435684), (14, 1457717842), (28, 728858921), (49, 416490812), (98, 208245406), (196, 104122703), (661, 30874508), (1322, 15437254), (2644, 7718627), (4627, 4410644), (9254, 2205322), (18508, 1102661), (32389, 630092), (64778, 315046), (129556, 157523)]