19258281

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{7109}}^1$

素因数の和:7165

約数の個数: 24

約数和(自身を含む): 32535360

約数和(自身を除く): 13277079

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 7109, 21327, 49763, 63981, 149289, 305687, 447867, 917061, 2139809, 2751183, 6419427, 19258281]

約数ペア:

[(1, 19258281), (3, 6419427), (7, 2751183), (9, 2139809), (21, 917061), (43, 447867), (63, 305687), (129, 149289), (301, 63981), (387, 49763), (903, 21327), (2709, 7109)]