398398

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1$

素因数の和:232

約数の個数: 32

約数和(自身を含む): 806400

約数和(自身を除く): 408002

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 77, 91, 143, 154, 182, 199, 286, 398, 1001, 1393, 2002, 2189, 2587, 2786, 4378, 5174, 15323, 18109, 28457, 30646, 36218, 56914, 199199, 398398]

約数ペア:

[(1, 398398), (2, 199199), (7, 56914), (11, 36218), (13, 30646), (14, 28457), (22, 18109), (26, 15323), (77, 5174), (91, 4378), (143, 2786), (154, 2587), (182, 2189), (199, 2002), (286, 1393), (398, 1001)]