18220209

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{317}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 31321728

約数和(自身を除く): 13101519

約数列:

[1, 3, 7, 17, 21, 23, 49, 51, 69, 119, 147, 161, 317, 357, 391, 483, 833, 951, 1127, 1173, 2219, 2499, 2737, 3381, 5389, 6657, 7291, 8211, 15533, 16167, 19159, 21873, 37723, 46599, 51037, 57477, 113169, 123947, 153111, 264061, 357259, 371841, 792183, 867629, 1071777, 2602887, 6073403, 18220209]

約数ペア:

[(1, 18220209), (3, 6073403), (7, 2602887), (17, 1071777), (21, 867629), (23, 792183), (49, 371841), (51, 357259), (69, 264061), (119, 153111), (147, 123947), (161, 113169), (317, 57477), (357, 51037), (391, 46599), (483, 37723), (833, 21873), (951, 19159), (1127, 16167), (1173, 15533), (2219, 8211), (2499, 7291), (2737, 6657), (3381, 5389)]