21715785

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5303}}^1$

素因数の和:5334

約数の個数: 48

約数和(自身を含む): 46335744

約数和(自身を除く): 24619959

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 5303, 15909, 26515, 37121, 47727, 68939, 79545, 111363, 185605, 206817, 238635, 334089, 344695, 482573, 556815, 620451, 1034085, 1447719, 1670445, 2412865, 3102255, 4343157, 7238595, 21715785]

約数ペア:

[(1, 21715785), (3, 7238595), (5, 4343157), (7, 3102255), (9, 2412865), (13, 1670445), (15, 1447719), (21, 1034085), (35, 620451), (39, 556815), (45, 482573), (63, 344695), (65, 334089), (91, 238635), (105, 206817), (117, 185605), (195, 111363), (273, 79545), (315, 68939), (455, 47727), (585, 37121), (819, 26515), (1365, 15909), (4095, 5303)]