21336183

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{199}}^1$

素因数の和:257

約数の個数: 48

約数和(自身を含む): 36576000

約数和(自身を除く): 15239817

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 99, 171, 199, 209, 297, 361, 513, 597, 627, 1083, 1791, 1881, 2189, 3249, 3781, 3971, 5373, 5643, 6567, 9747, 11343, 11913, 19701, 34029, 35739, 41591, 59103, 71839, 102087, 107217, 124773, 215517, 374319, 646551, 790229, 1122957, 1939653, 2370687, 7112061, 21336183]

約数ペア:

[(1, 21336183), (3, 7112061), (9, 2370687), (11, 1939653), (19, 1122957), (27, 790229), (33, 646551), (57, 374319), (99, 215517), (171, 124773), (199, 107217), (209, 102087), (297, 71839), (361, 59103), (513, 41591), (597, 35739), (627, 34029), (1083, 19701), (1791, 11913), (1881, 11343), (2189, 9747), (3249, 6567), (3781, 5643), (3971, 5373)]