21173451

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 31940160

約数和(自身を除く): 10766709

約数列:

[1, 3, 13, 29, 39, 87, 97, 193, 291, 377, 579, 1131, 1261, 2509, 2813, 3783, 5597, 7527, 8439, 16791, 18721, 36569, 56163, 72761, 109707, 218283, 243373, 542909, 730119, 1628727, 7057817, 21173451]

約数ペア:

[(1, 21173451), (3, 7057817), (13, 1628727), (29, 730119), (39, 542909), (87, 243373), (97, 218283), (193, 109707), (291, 72761), (377, 56163), (579, 36569), (1131, 18721), (1261, 16791), (2509, 8439), (2813, 7527), (3783, 5597)]