209718817

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{1223}}^1$

素因数の和:1389

約数の個数: 32

約数和(自身を含む): 279189504

約数和(自身を除く): 69470687

約数列:

[1, 7, 11, 17, 77, 119, 131, 187, 917, 1223, 1309, 1441, 2227, 8561, 10087, 13453, 15589, 20791, 24497, 94171, 145537, 160213, 171479, 228701, 1121491, 1600907, 1762343, 2723621, 12336401, 19065347, 29959831, 209718817]

約数ペア:

[(1, 209718817), (7, 29959831), (11, 19065347), (17, 12336401), (77, 2723621), (119, 1762343), (131, 1600907), (187, 1121491), (917, 228701), (1223, 171479), (1309, 160213), (1441, 145537), (2227, 94171), (8561, 24497), (10087, 20791), (13453, 15589)]