220978199

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{7723}}^1$

素因数の和:7838

約数の個数: 16

約数和(自身を含む): 249145344

約数和(自身を除く): 28167145

約数列:

[1, 13, 31, 71, 403, 923, 2201, 7723, 28613, 100399, 239413, 548333, 3112369, 7128329, 16998323, 220978199]

約数ペア:

[(1, 220978199), (13, 16998323), (31, 7128329), (71, 3112369), (403, 548333), (923, 239413), (2201, 100399), (7723, 28613)]