19910111

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{3917}}^1$

素因数の和:3970

約数の個数: 16

約数和(自身を含む): 23696064

約数和(自身を除く): 3785953

約数列:

[1, 13, 17, 23, 221, 299, 391, 3917, 5083, 50921, 66589, 90091, 865657, 1171183, 1531547, 19910111]

約数ペア:

[(1, 19910111), (13, 1531547), (17, 1171183), (23, 865657), (221, 90091), (299, 66589), (391, 50921), (3917, 5083)]