209905465

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1097}}^1$

素因数の和:1198

約数の個数: 48

約数和(自身を含む): 324445824

約数和(自身を除く): 114540359

約数列:

[1, 5, 7, 11, 35, 49, 55, 71, 77, 245, 355, 385, 497, 539, 781, 1097, 2485, 2695, 3479, 3905, 5467, 5485, 7679, 12067, 17395, 27335, 38269, 38395, 53753, 60335, 77887, 84469, 191345, 268765, 389435, 422345, 545209, 591283, 856757, 2726045, 2956415, 3816463, 4283785, 5997299, 19082315, 29986495, 41981093, 209905465]

約数ペア:

[(1, 209905465), (5, 41981093), (7, 29986495), (11, 19082315), (35, 5997299), (49, 4283785), (55, 3816463), (71, 2956415), (77, 2726045), (245, 856757), (355, 591283), (385, 545209), (497, 422345), (539, 389435), (781, 268765), (1097, 191345), (2485, 84469), (2695, 77887), (3479, 60335), (3905, 53753), (5467, 38395), (5485, 38269), (7679, 27335), (12067, 17395)]