21964527

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 37608480

約数和(自身を除く): 15643953

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 81, 117, 153, 221, 243, 351, 409, 459, 663, 1053, 1227, 1377, 1989, 3159, 3681, 4131, 5317, 5967, 6953, 11043, 15951, 17901, 20859, 33129, 47853, 53703, 62577, 90389, 99387, 143559, 187731, 271167, 430677, 563193, 813501, 1292031, 1689579, 2440503, 7321509, 21964527]

約数ペア:

[(1, 21964527), (3, 7321509), (9, 2440503), (13, 1689579), (17, 1292031), (27, 813501), (39, 563193), (51, 430677), (81, 271167), (117, 187731), (153, 143559), (221, 99387), (243, 90389), (351, 62577), (409, 53703), (459, 47853), (663, 33129), (1053, 20859), (1227, 17901), (1377, 15951), (1989, 11043), (3159, 6953), (3681, 5967), (4131, 5317)]