19901778

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{1033}}^1$

素因数の和:1083

約数の個数: 48

約数和(自身を含む): 45413280

約数和(自身を除く): 25511502

約数列:

[1, 2, 3, 6, 13, 19, 26, 38, 39, 57, 78, 114, 169, 247, 338, 494, 507, 741, 1014, 1033, 1482, 2066, 3099, 3211, 6198, 6422, 9633, 13429, 19266, 19627, 26858, 39254, 40287, 58881, 80574, 117762, 174577, 255151, 349154, 510302, 523731, 765453, 1047462, 1530906, 3316963, 6633926, 9950889, 19901778]

約数ペア:

[(1, 19901778), (2, 9950889), (3, 6633926), (6, 3316963), (13, 1530906), (19, 1047462), (26, 765453), (38, 523731), (39, 510302), (57, 349154), (78, 255151), (114, 174577), (169, 117762), (247, 80574), (338, 58881), (494, 40287), (507, 39254), (741, 26858), (1014, 19627), (1033, 19266), (1482, 13429), (2066, 9633), (3099, 6422), (3211, 6198)]