19881043

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1109}}^1$

素因数の和:1326

約数の個数: 16

約数和(自身を含む): 24615360

約数和(自身を除く): 4734317

約数列:

[1, 7, 13, 91, 197, 1109, 1379, 2561, 7763, 14417, 17927, 100919, 218473, 1529311, 2840149, 19881043]

約数ペア:

[(1, 19881043), (7, 2840149), (13, 1529311), (91, 218473), (197, 100919), (1109, 17927), (1379, 14417), (2561, 7763)]