19505529

素因数分解:

$3^4\times {\mathrm{257}}^1\times {\mathrm{937}}^1$

素因数の和:1206

約数の個数: 20

約数和(自身を含む): 29282484

約数和(自身を除く): 9776955

約数列:

[1, 3, 9, 27, 81, 257, 771, 937, 2313, 2811, 6939, 8433, 20817, 25299, 75897, 240809, 722427, 2167281, 6501843, 19505529]

約数ペア:

[(1, 19505529), (3, 6501843), (9, 2167281), (27, 722427), (81, 240809), (257, 75897), (771, 25299), (937, 20817), (2313, 8433), (2811, 6939)]