20338209

素因数分解:

$3^4\times {\mathrm{257}}^1\times {\mathrm{977}}^1$

素因数の和:1246

約数の個数: 20

約数和(自身を含む): 30531204

約数和(自身を除く): 10192995

約数列:

[1, 3, 9, 27, 81, 257, 771, 977, 2313, 2931, 6939, 8793, 20817, 26379, 79137, 251089, 753267, 2259801, 6779403, 20338209]

約数ペア:

[(1, 20338209), (3, 6779403), (9, 2259801), (27, 753267), (81, 251089), (257, 79137), (771, 26379), (977, 20817), (2313, 8793), (2931, 6939)]