388978866

素因数分解:

$2^1\times 3^2\times {\mathrm{21609937}}^1$

素因数の和:21609945

約数の個数: 12

約数和(自身を含む): 842787582

約数和(自身を除く): 453808716

約数列:

[1, 2, 3, 6, 9, 18, 21609937, 43219874, 64829811, 129659622, 194489433, 388978866]

約数ペア:

[(1, 388978866), (2, 194489433), (3, 129659622), (6, 64829811), (9, 43219874), (18, 21609937)]