20217838

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{3121}}^1$

素因数の和:3243

約数の個数: 16

約数和(自身を含む): 31469760

約数和(自身を除く): 11251922

約数列:

[1, 2, 41, 79, 82, 158, 3121, 3239, 6242, 6478, 127961, 246559, 255922, 493118, 10108919, 20217838]

約数ペア:

[(1, 20217838), (2, 10108919), (41, 493118), (79, 255922), (82, 246559), (158, 127961), (3121, 6478), (3239, 6242)]