18987694

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{349}}^1\times {\mathrm{2473}}^1$

素因数の和:2835

約数の個数: 16

約数和(自身を含む): 31172400

約数和(自身を除く): 12184706

約数列:

[1, 2, 11, 22, 349, 698, 2473, 3839, 4946, 7678, 27203, 54406, 863077, 1726154, 9493847, 18987694]

約数ペア:

[(1, 18987694), (2, 9493847), (11, 1726154), (22, 863077), (349, 54406), (698, 27203), (2473, 7678), (3839, 4946)]