2005403981

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{103837}}^1$

素因数の和:103964

約数の個数: 16

約数和(自身を含む): 2392427520

約数和(自身を除く): 387023539

約数列:

[1, 7, 31, 89, 217, 623, 2759, 19313, 103837, 726859, 3218947, 9241493, 22532629, 64690451, 286486283, 2005403981]

約数ペア:

[(1, 2005403981), (7, 286486283), (31, 64690451), (89, 22532629), (217, 9241493), (623, 3218947), (2759, 726859), (19313, 103837)]