18781251841

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{857}}^1$

素因数の和:1054

約数の個数: 64

約数和(自身を含む): 23247544320

約数和(自身を除く): 4466292479

約数列:

[1, 11, 19, 23, 47, 97, 209, 253, 437, 517, 857, 893, 1067, 1081, 1843, 2231, 4559, 4807, 9427, 9823, 11891, 16283, 19711, 20273, 20539, 24541, 40279, 42389, 50149, 83129, 86621, 104857, 179113, 216821, 225929, 374509, 443069, 466279, 765301, 914419, 926417, 952831, 1153427, 1579451, 1911967, 1992283, 3907063, 4119599, 8418311, 10190587, 17373961, 17601923, 21031637, 21915113, 36327373, 42977693, 74234197, 89862449, 193621153, 399601103, 816576167, 988486939, 1707386531, 18781251841]

約数ペア:

[(1, 18781251841), (11, 1707386531), (19, 988486939), (23, 816576167), (47, 399601103), (97, 193621153), (209, 89862449), (253, 74234197), (437, 42977693), (517, 36327373), (857, 21915113), (893, 21031637), (1067, 17601923), (1081, 17373961), (1843, 10190587), (2231, 8418311), (4559, 4119599), (4807, 3907063), (9427, 1992283), (9823, 1911967), (11891, 1579451), (16283, 1153427), (19711, 952831), (20273, 926417), (20539, 914419), (24541, 765301), (40279, 466279), (42389, 443069), (50149, 374509), (83129, 225929), (86621, 216821), (104857, 179113)]