201721689

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{881}}^1$

素因数の和:1022

約数の個数: 48

約数和(自身を含む): 333889920

約数和(自身を除く): 132168231

約数列:

[1, 3, 9, 13, 19, 39, 57, 103, 117, 171, 247, 309, 741, 881, 927, 1339, 1957, 2223, 2643, 4017, 5871, 7929, 11453, 12051, 16739, 17613, 25441, 34359, 50217, 76323, 90743, 103077, 150651, 217607, 228969, 272229, 652821, 816687, 1179659, 1724117, 1958463, 3538977, 5172351, 10616931, 15517053, 22413521, 67240563, 201721689]

約数ペア:

[(1, 201721689), (3, 67240563), (9, 22413521), (13, 15517053), (19, 10616931), (39, 5172351), (57, 3538977), (103, 1958463), (117, 1724117), (171, 1179659), (247, 816687), (309, 652821), (741, 272229), (881, 228969), (927, 217607), (1339, 150651), (1957, 103077), (2223, 90743), (2643, 76323), (4017, 50217), (5871, 34359), (7929, 25441), (11453, 17613), (12051, 16739)]