20950761

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{31}}^2\times {\mathrm{43}}^1$

素因数の和:134

約数の個数: 36

約数和(自身を含む): 31982544

約数和(自身を除く): 11031783

約数列:

[1, 3, 13, 31, 39, 43, 93, 129, 169, 403, 507, 559, 961, 1209, 1333, 1677, 2883, 3999, 5239, 7267, 12493, 15717, 17329, 21801, 37479, 41323, 51987, 123969, 162409, 225277, 487227, 537199, 675831, 1611597, 6983587, 20950761]

約数ペア:

[(1, 20950761), (3, 6983587), (13, 1611597), (31, 675831), (39, 537199), (43, 487227), (93, 225277), (129, 162409), (169, 123969), (403, 51987), (507, 41323), (559, 37479), (961, 21801), (1209, 17329), (1333, 15717), (1677, 12493), (2883, 7267), (3999, 5239)]