21150261

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:167

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 16174539

約数列:

[1, 3, 9, 11, 17, 27, 33, 51, 59, 71, 99, 153, 177, 187, 213, 297, 459, 531, 561, 639, 649, 781, 1003, 1207, 1593, 1683, 1917, 1947, 2343, 3009, 3621, 4189, 5049, 5841, 7029, 9027, 10863, 11033, 12567, 13277, 17523, 21087, 27081, 32589, 33099, 37701, 39831, 46079, 71213, 99297, 113103, 119493, 138237, 213639, 297891, 358479, 414711, 640917, 783343, 1244133, 1922751, 2350029, 7050087, 21150261]

約数ペア:

[(1, 21150261), (3, 7050087), (9, 2350029), (11, 1922751), (17, 1244133), (27, 783343), (33, 640917), (51, 414711), (59, 358479), (71, 297891), (99, 213639), (153, 138237), (177, 119493), (187, 113103), (213, 99297), (297, 71213), (459, 46079), (531, 39831), (561, 37701), (639, 33099), (649, 32589), (781, 27081), (1003, 21087), (1207, 17523), (1593, 13277), (1683, 12567), (1917, 11033), (1947, 10863), (2343, 9027), (3009, 7029), (3621, 5841), (4189, 5049)]