19812881

素因数分解:

${\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:472

約数の個数: 16

約数和(自身を含む): 22353408

約数和(自身を除く): 2540527

約数列:

[1, 11, 41, 197, 223, 451, 2167, 2453, 8077, 9143, 43931, 88847, 100573, 483241, 1801171, 19812881]

約数ペア:

[(1, 19812881), (11, 1801171), (41, 483241), (197, 100573), (223, 88847), (451, 43931), (2167, 9143), (2453, 8077)]