20903289

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{14731}}^1$

素因数の和:14788

約数の個数: 16

約数和(自身を含む): 31113984

約数和(自身を除く): 10210695

約数列:

[1, 3, 11, 33, 43, 129, 473, 1419, 14731, 44193, 162041, 486123, 633433, 1900299, 6967763, 20903289]

約数ペア:

[(1, 20903289), (3, 6967763), (11, 1900299), (33, 633433), (43, 486123), (129, 162041), (473, 44193), (1419, 14731)]