21178828

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{15527}}^1$

素因数の和:15573

約数の個数: 24

約数和(自身を含む): 41739264

約数和(自身を除く): 20560436

約数列:

[1, 2, 4, 11, 22, 31, 44, 62, 124, 341, 682, 1364, 15527, 31054, 62108, 170797, 341594, 481337, 683188, 962674, 1925348, 5294707, 10589414, 21178828]

約数ペア:

[(1, 21178828), (2, 10589414), (4, 5294707), (11, 1925348), (22, 962674), (31, 683188), (44, 481337), (62, 341594), (124, 170797), (341, 62108), (682, 31054), (1364, 15527)]