20991652

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{349}}^1\times {\mathrm{1367}}^1$

素因数の和:1731

約数の個数: 24

約数和(自身を含む): 40219200

約数和(自身を除く): 19227548

約数列:

[1, 2, 4, 11, 22, 44, 349, 698, 1367, 1396, 2734, 3839, 5468, 7678, 15037, 15356, 30074, 60148, 477083, 954166, 1908332, 5247913, 10495826, 20991652]

約数ペア:

[(1, 20991652), (2, 10495826), (4, 5247913), (11, 1908332), (22, 954166), (44, 477083), (349, 60148), (698, 30074), (1367, 15356), (1396, 15037), (2734, 7678), (3839, 5468)]