81990819

素因数分解:

$3^3\times {\mathrm{127}}^1\times {\mathrm{23911}}^1$

素因数の和:24047

約数の個数: 16

約数和(自身を含む): 122429440

約数和(自身を除く): 40438621

約数列:

[1, 3, 9, 27, 127, 381, 1143, 3429, 23911, 71733, 215199, 645597, 3036697, 9110091, 27330273, 81990819]

約数ペア:

[(1, 81990819), (3, 27330273), (9, 9110091), (27, 3036697), (127, 645597), (381, 215199), (1143, 71733), (3429, 23911)]