81990390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{19949}}^1$

素因数の和:20096

約数の個数: 32

約数和(自身を含む): 198223200

約数和(自身を除く): 116232810

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 137, 274, 411, 685, 822, 1370, 2055, 4110, 19949, 39898, 59847, 99745, 119694, 199490, 299235, 598470, 2733013, 5466026, 8199039, 13665065, 16398078, 27330130, 40995195, 81990390]

約数ペア:

[(1, 81990390), (2, 40995195), (3, 27330130), (5, 16398078), (6, 13665065), (10, 8199039), (15, 5466026), (30, 2733013), (137, 598470), (274, 299235), (411, 199490), (685, 119694), (822, 99745), (1370, 59847), (2055, 39898), (4110, 19949)]