208519689

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1\times {\mathrm{647}}^1$

素因数の和:909

約数の個数: 32

約数和(自身を含む): 323481600

約数和(自身を除く): 114961911

約数列:

[1, 3, 7, 21, 103, 149, 309, 447, 647, 721, 1043, 1941, 2163, 3129, 4529, 13587, 15347, 46041, 66641, 96403, 107429, 199923, 289209, 322287, 466487, 674821, 1399461, 2024463, 9929509, 29788527, 69506563, 208519689]

約数ペア:

[(1, 208519689), (3, 69506563), (7, 29788527), (21, 9929509), (103, 2024463), (149, 1399461), (309, 674821), (447, 466487), (647, 322287), (721, 289209), (1043, 199923), (1941, 107429), (2163, 96403), (3129, 66641), (4529, 46041), (13587, 15347)]