21689668

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5417}}^1$

素因数の和:5452

約数の個数: 48

約数和(自身を含む): 50972544

約数和(自身を除く): 29282876

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 5417, 10834, 21668, 37919, 59587, 70421, 75838, 119174, 140842, 151676, 238348, 281684, 417109, 492947, 774631, 834218, 985894, 1549262, 1668436, 1971788, 3098524, 5422417, 10844834, 21689668]

約数ペア:

[(1, 21689668), (2, 10844834), (4, 5422417), (7, 3098524), (11, 1971788), (13, 1668436), (14, 1549262), (22, 985894), (26, 834218), (28, 774631), (44, 492947), (52, 417109), (77, 281684), (91, 238348), (143, 151676), (154, 140842), (182, 119174), (286, 75838), (308, 70421), (364, 59587), (572, 37919), (1001, 21668), (2002, 10834), (4004, 5417)]