18690478

素因数分解:

$2^1\times {\mathrm{151}}^1\times {\mathrm{199}}^1\times {\mathrm{311}}^1$

素因数の和:663

約数の個数: 16

約数和(自身を含む): 28454400

約数和(自身を除く): 9763922

約数列:

[1, 2, 151, 199, 302, 311, 398, 622, 30049, 46961, 60098, 61889, 93922, 123778, 9345239, 18690478]

約数ペア:

[(1, 18690478), (2, 9345239), (151, 123778), (199, 93922), (302, 61889), (311, 60098), (398, 46961), (622, 30049)]