21230181

素因数分解:

$3^5\times 7^2\times {\mathrm{1783}}^1$

素因数の和:1812

約数の個数: 36

約数和(自身を含む): 37014432

約数和(自身を除く): 15784251

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 1323, 1701, 1783, 3969, 5349, 11907, 12481, 16047, 37443, 48141, 87367, 112329, 144423, 262101, 336987, 433269, 786303, 1010961, 2358909, 3032883, 7076727, 21230181]

約数ペア:

[(1, 21230181), (3, 7076727), (7, 3032883), (9, 2358909), (21, 1010961), (27, 786303), (49, 433269), (63, 336987), (81, 262101), (147, 144423), (189, 112329), (243, 87367), (441, 48141), (567, 37443), (1323, 16047), (1701, 12481), (1783, 11907), (3969, 5349)]