21272391

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^2\times {\mathrm{97}}^1$

素因数の和:228

約数の個数: 36

約数和(自身を含む): 36089872

約数和(自身を除く): 14817481

約数列:

[1, 3, 7, 9, 21, 59, 63, 97, 177, 291, 413, 531, 679, 873, 1239, 2037, 3481, 3717, 5723, 6111, 10443, 17169, 24367, 31329, 40061, 51507, 73101, 120183, 219303, 337657, 360549, 1012971, 2363599, 3038913, 7090797, 21272391]

約数ペア:

[(1, 21272391), (3, 7090797), (7, 3038913), (9, 2363599), (21, 1012971), (59, 360549), (63, 337657), (97, 219303), (177, 120183), (291, 73101), (413, 51507), (531, 40061), (679, 31329), (873, 24367), (1239, 17169), (2037, 10443), (3481, 6111), (3717, 5723)]