21809007

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 14882193

約数列:

[1, 3, 9, 11, 27, 33, 41, 81, 99, 123, 199, 243, 297, 369, 451, 597, 891, 1107, 1353, 1791, 2189, 2673, 3321, 4059, 5373, 6567, 8159, 9963, 12177, 16119, 19701, 24477, 36531, 48357, 59103, 73431, 89749, 109593, 177309, 220293, 269247, 531927, 660879, 807741, 1982637, 2423223, 7269669, 21809007]

約数ペア:

[(1, 21809007), (3, 7269669), (9, 2423223), (11, 1982637), (27, 807741), (33, 660879), (41, 531927), (81, 269247), (99, 220293), (123, 177309), (199, 109593), (243, 89749), (297, 73431), (369, 59103), (451, 48357), (597, 36531), (891, 24477), (1107, 19701), (1353, 16119), (1791, 12177), (2189, 9963), (2673, 8159), (3321, 6567), (4059, 5373)]