81741638

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{18671}}^1$

素因数の和:18883

約数の個数: 16

約数和(自身を含む): 134438400

約数和(自身を除く): 52696762

約数列:

[1, 2, 11, 22, 199, 398, 2189, 4378, 18671, 37342, 205381, 410762, 3715529, 7431058, 40870819, 81741638]

約数ペア:

[(1, 81741638), (2, 40870819), (11, 7431058), (22, 3715529), (199, 410762), (398, 205381), (2189, 37342), (4378, 18671)]