20962767

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 33191424

約数和(自身を除く): 12228657

約数列:

[1, 3, 7, 21, 41, 97, 123, 251, 287, 291, 679, 753, 861, 1757, 2037, 3977, 5271, 10291, 11931, 24347, 27839, 30873, 72037, 73041, 83517, 170429, 216111, 511287, 998227, 2994681, 6987589, 20962767]

約数ペア:

[(1, 20962767), (3, 6987589), (7, 2994681), (21, 998227), (41, 511287), (97, 216111), (123, 170429), (251, 83517), (287, 73041), (291, 72037), (679, 30873), (753, 27839), (861, 24347), (1757, 11931), (2037, 10291), (3977, 5271)]