18678538

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1\times {\mathrm{661}}^1$

素因数の和:933

約数の個数: 16

約数和(自身を含む): 28598400

約数和(自身を除く): 9919862

約数列:

[1, 2, 71, 142, 199, 398, 661, 1322, 14129, 28258, 46931, 93862, 131539, 263078, 9339269, 18678538]

約数ペア:

[(1, 18678538), (2, 9339269), (71, 263078), (142, 131539), (199, 93862), (398, 46931), (661, 28258), (1322, 14129)]