20853339

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{443}}^1$

素因数の和:547

約数の個数: 32

約数和(自身を含む): 32223744

約数和(自身を除く): 11370405

約数列:

[1, 3, 13, 17, 39, 51, 71, 213, 221, 443, 663, 923, 1207, 1329, 2769, 3621, 5759, 7531, 15691, 17277, 22593, 31453, 47073, 94359, 97903, 293709, 408889, 534701, 1226667, 1604103, 6951113, 20853339]

約数ペア:

[(1, 20853339), (3, 6951113), (13, 1604103), (17, 1226667), (39, 534701), (51, 408889), (71, 293709), (213, 97903), (221, 94359), (443, 47073), (663, 31453), (923, 22593), (1207, 17277), (1329, 15691), (2769, 7531), (3621, 5759)]