21000971079

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1\times {\mathrm{10639}}^1$

素因数の和:10940

約数の個数: 48

約数和(自身を含む): 33568604160

約数和(自身を除く): 12567633081

約数列:

[1, 3, 9, 11, 33, 99, 127, 157, 381, 471, 1143, 1397, 1413, 1727, 4191, 5181, 10639, 12573, 15543, 19939, 31917, 59817, 95751, 117029, 179451, 219329, 351087, 657987, 1053261, 1351153, 1670323, 1973961, 4053459, 5010969, 12160377, 14862683, 15032907, 18373553, 44588049, 55120659, 133764147, 165361977, 212131021, 636393063, 1909179189, 2333441231, 7000323693, 21000971079]

約数ペア:

[(1, 21000971079), (3, 7000323693), (9, 2333441231), (11, 1909179189), (33, 636393063), (99, 212131021), (127, 165361977), (157, 133764147), (381, 55120659), (471, 44588049), (1143, 18373553), (1397, 15032907), (1413, 14862683), (1727, 12160377), (4191, 5010969), (5181, 4053459), (10639, 1973961), (12573, 1670323), (15543, 1351153), (19939, 1053261), (31917, 657987), (59817, 351087), (95751, 219329), (117029, 179451)]