28309281

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{857}}^1$

素因数の和:902

約数の個数: 48

約数和(自身を含む): 51123072

約数和(自身を除く): 22813791

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 121, 143, 231, 273, 363, 429, 847, 857, 1001, 1573, 2541, 2571, 3003, 4719, 5999, 9427, 11011, 11141, 17997, 28281, 33033, 33423, 65989, 77987, 103697, 122551, 197967, 233961, 311091, 367653, 725879, 857857, 1348061, 2177637, 2573571, 4044183, 9436427, 28309281]

約数ペア:

[(1, 28309281), (3, 9436427), (7, 4044183), (11, 2573571), (13, 2177637), (21, 1348061), (33, 857857), (39, 725879), (77, 367653), (91, 311091), (121, 233961), (143, 197967), (231, 122551), (273, 103697), (363, 77987), (429, 65989), (847, 33423), (857, 33033), (1001, 28281), (1573, 17997), (2541, 11141), (2571, 11011), (3003, 9427), (4719, 5999)]