81120390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{208001}}^1$

素因数の和:208024

約数の個数: 32

約数和(自身を含む): 209666016

約数和(自身を除く): 128545626

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 208001, 416002, 624003, 1040005, 1248006, 2080010, 2704013, 3120015, 5408026, 6240030, 8112039, 13520065, 16224078, 27040130, 40560195, 81120390]

約数ペア:

[(1, 81120390), (2, 40560195), (3, 27040130), (5, 16224078), (6, 13520065), (10, 8112039), (13, 6240030), (15, 5408026), (26, 3120015), (30, 2704013), (39, 2080010), (65, 1248006), (78, 1040005), (130, 624003), (195, 416002), (390, 208001)]