20123379

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{421}}^1$

素因数の和:587

約数の個数: 24

約数和(自身を含む): 30019392

約数和(自身を除く): 9896013

約数列:

[1, 3, 9, 47, 113, 141, 339, 421, 423, 1017, 1263, 3789, 5311, 15933, 19787, 47573, 47799, 59361, 142719, 178083, 428157, 2235931, 6707793, 20123379]

約数ペア:

[(1, 20123379), (3, 6707793), (9, 2235931), (47, 428157), (113, 178083), (141, 142719), (339, 59361), (421, 47799), (423, 47573), (1017, 19787), (1263, 15933), (3789, 5311)]