21349209

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{17231}}^1$

素因数の和:17300

約数の個数: 16

約数和(自身を含む): 33085440

約数和(自身を除く): 11736231

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 17231, 51693, 120617, 361851, 1016629, 3049887, 7116403, 21349209]

約数ペア:

[(1, 21349209), (3, 7116403), (7, 3049887), (21, 1016629), (59, 361851), (177, 120617), (413, 51693), (1239, 17231)]