19935279

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{241}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 35939904

約数和(自身を除く): 16004625

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 101, 117, 241, 273, 303, 707, 723, 819, 909, 1313, 1687, 2121, 2169, 3133, 3939, 5061, 6363, 9191, 9399, 11817, 15183, 21931, 24341, 27573, 28197, 65793, 73023, 82719, 170387, 197379, 219069, 316433, 511161, 949299, 1533483, 2215031, 2847897, 6645093, 19935279]

約数ペア:

[(1, 19935279), (3, 6645093), (7, 2847897), (9, 2215031), (13, 1533483), (21, 949299), (39, 511161), (63, 316433), (91, 219069), (101, 197379), (117, 170387), (241, 82719), (273, 73023), (303, 65793), (707, 28197), (723, 27573), (819, 24341), (909, 21931), (1313, 15183), (1687, 11817), (2121, 9399), (2169, 9191), (3133, 6363), (3939, 5061)]