17851239

素因数分解:

$3^3\times 7^2\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:257

約数の個数: 48

約数和(自身を含む): 31299840

約数和(自身を除く): 13448601

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 103, 131, 147, 189, 309, 393, 441, 721, 917, 927, 1179, 1323, 2163, 2751, 2781, 3537, 5047, 6419, 6489, 8253, 13493, 15141, 19257, 19467, 24759, 40479, 45423, 57771, 94451, 121437, 136269, 173313, 283353, 364311, 661157, 850059, 1983471, 2550177, 5950413, 17851239]

約数ペア:

[(1, 17851239), (3, 5950413), (7, 2550177), (9, 1983471), (21, 850059), (27, 661157), (49, 364311), (63, 283353), (103, 173313), (131, 136269), (147, 121437), (189, 94451), (309, 57771), (393, 45423), (441, 40479), (721, 24759), (917, 19467), (927, 19257), (1179, 15141), (1323, 13493), (2163, 8253), (2751, 6489), (2781, 6419), (3537, 5047)]