20198880611

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{2155007}}^1$

素因数の和:2155130

約数の個数: 16

約数和(自身を含む): 25101533184

約数和(自身を除く): 4902652573

約数列:

[1, 7, 13, 91, 103, 721, 1339, 9373, 2155007, 15085049, 28015091, 196105637, 221965721, 1553760047, 2885554373, 20198880611]

約数ペア:

[(1, 20198880611), (7, 2885554373), (13, 1553760047), (91, 221965721), (103, 196105637), (721, 28015091), (1339, 15085049), (9373, 2155007)]