208066551

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{20947}}^1$

素因数の和:21011

約数の個数: 32

約数和(自身を含む): 353937408

約数和(自身を除く): 145870857

約数列:

[1, 3, 7, 11, 21, 33, 43, 77, 129, 231, 301, 473, 903, 1419, 3311, 9933, 20947, 62841, 146629, 230417, 439887, 691251, 900721, 1612919, 2702163, 4838757, 6305047, 9907931, 18915141, 29723793, 69355517, 208066551]

約数ペア:

[(1, 208066551), (3, 69355517), (7, 29723793), (11, 18915141), (21, 9907931), (33, 6305047), (43, 4838757), (77, 2702163), (129, 1612919), (231, 900721), (301, 691251), (473, 439887), (903, 230417), (1419, 146629), (3311, 62841), (9933, 20947)]