21306087

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{241}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 36241920

約数和(自身を除く): 14935833

約数列:

[1, 3, 9, 11, 19, 33, 47, 57, 99, 141, 171, 209, 241, 423, 517, 627, 723, 893, 1551, 1881, 2169, 2651, 2679, 4579, 4653, 7953, 8037, 9823, 11327, 13737, 23859, 29469, 33981, 41211, 50369, 88407, 101943, 124597, 151107, 215213, 373791, 453321, 645639, 1121373, 1936917, 2367343, 7102029, 21306087]

約数ペア:

[(1, 21306087), (3, 7102029), (9, 2367343), (11, 1936917), (19, 1121373), (33, 645639), (47, 453321), (57, 373791), (99, 215213), (141, 151107), (171, 124597), (209, 101943), (241, 88407), (423, 50369), (517, 41211), (627, 33981), (723, 29469), (893, 23859), (1551, 13737), (1881, 11327), (2169, 9823), (2651, 8037), (2679, 7953), (4579, 4653)]