81720512085

素因数分解:

$3^1\times 5^1\times {\mathrm{13681}}^1\times {\mathrm{398219}}^1$

素因数の和:411908

約数の個数: 16

約数和(自身を含む): 130762704960

約数和(自身を除く): 49042192875

約数列:

[1, 3, 5, 15, 13681, 41043, 68405, 205215, 398219, 1194657, 1991095, 5973285, 5448034139, 16344102417, 27240170695, 81720512085]

約数ペア:

[(1, 81720512085), (3, 27240170695), (5, 16344102417), (15, 5448034139), (13681, 5973285), (41043, 1991095), (68405, 1194657), (205215, 398219)]