2181321

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{269}}^1$

素因数の和:345

約数の個数: 24

約数和(自身を含む): 3411720

約数和(自身を除く): 1230399

約数列:

[1, 3, 9, 17, 51, 53, 153, 159, 269, 477, 807, 901, 2421, 2703, 4573, 8109, 13719, 14257, 41157, 42771, 128313, 242369, 727107, 2181321]

約数ペア:

[(1, 2181321), (3, 727107), (9, 242369), (17, 128313), (51, 42771), (53, 41157), (153, 14257), (159, 13719), (269, 8109), (477, 4573), (807, 2703), (901, 2421)]