20026279

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{229}}^1$

素因数の和:311

約数の個数: 24

約数和(自身を含む): 25579680

約数和(自身を除く): 5553401

約数列:

[1, 7, 13, 31, 91, 217, 229, 403, 961, 1603, 2821, 2977, 6727, 7099, 12493, 20839, 49693, 87451, 92287, 220069, 646009, 1540483, 2860897, 20026279]

約数ペア:

[(1, 20026279), (7, 2860897), (13, 1540483), (31, 646009), (91, 220069), (217, 92287), (229, 87451), (403, 49693), (961, 20839), (1603, 12493), (2821, 7099), (2977, 6727)]