18610641

素因数分解:

$3^6\times 7^2\times {\mathrm{521}}^1$

素因数の和:553

約数の個数: 42

約数和(自身を含む): 32521122

約数和(自身を除く): 13910481

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 521, 567, 729, 1323, 1563, 1701, 3647, 3969, 4689, 5103, 10941, 11907, 14067, 25529, 32823, 35721, 42201, 76587, 98469, 126603, 229761, 295407, 379809, 689283, 886221, 2067849, 2658663, 6203547, 18610641]

約数ペア:

[(1, 18610641), (3, 6203547), (7, 2658663), (9, 2067849), (21, 886221), (27, 689283), (49, 379809), (63, 295407), (81, 229761), (147, 126603), (189, 98469), (243, 76587), (441, 42201), (521, 35721), (567, 32823), (729, 25529), (1323, 14067), (1563, 11907), (1701, 10941), (3647, 5103), (3969, 4689)]