2840019

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 4752384

約数和(自身を除く): 1912365

約数列:

[1, 3, 7, 13, 21, 39, 91, 101, 103, 273, 303, 309, 707, 721, 1313, 1339, 2121, 2163, 3939, 4017, 9191, 9373, 10403, 27573, 28119, 31209, 72821, 135239, 218463, 405717, 946673, 2840019]

約数ペア:

[(1, 2840019), (3, 946673), (7, 405717), (13, 218463), (21, 135239), (39, 72821), (91, 31209), (101, 28119), (103, 27573), (273, 10403), (303, 9373), (309, 9191), (707, 4017), (721, 3939), (1313, 2163), (1339, 2121)]