20123375

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1$

素因数の和:300

約数の個数: 32

約数和(自身を含む): 27268800

約数和(自身を除く): 7145425

約数列:

[1, 5, 19, 25, 37, 95, 125, 185, 229, 475, 703, 925, 1145, 2375, 3515, 4351, 4625, 5725, 8473, 17575, 21755, 28625, 42365, 87875, 108775, 160987, 211825, 543875, 804935, 1059125, 4024675, 20123375]

約数ペア:

[(1, 20123375), (5, 4024675), (19, 1059125), (25, 804935), (37, 543875), (95, 211825), (125, 160987), (185, 108775), (229, 87875), (475, 42365), (703, 28625), (925, 21755), (1145, 17575), (2375, 8473), (3515, 5725), (4351, 4625)]