2721579

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{359}}^1$

素因数の和:407

約数の個数: 24

約数和(自身を含む): 4389120

約数和(自身を除く): 1667541

約数列:

[1, 3, 7, 19, 21, 57, 133, 359, 361, 399, 1077, 1083, 2513, 2527, 6821, 7539, 7581, 20463, 47747, 129599, 143241, 388797, 907193, 2721579]

約数ペア:

[(1, 2721579), (3, 907193), (7, 388797), (19, 143241), (21, 129599), (57, 47747), (133, 20463), (359, 7581), (361, 7539), (399, 6821), (1077, 2527), (1083, 2513)]