21459266901

素因数分解:

$3^4\times {\mathrm{257}}^1\times {\mathrm{563}}^1\times {\mathrm{1831}}^1$

素因数の和:2663

約数の個数: 40

約数和(自身を含む): 32255936064

約数和(自身を除く): 10796669163

約数列:

[1, 3, 9, 27, 81, 257, 563, 771, 1689, 1831, 2313, 5067, 5493, 6939, 15201, 16479, 20817, 45603, 49437, 144691, 148311, 434073, 470567, 1030853, 1302219, 1411701, 3092559, 3906657, 4235103, 9277677, 11719971, 12705309, 27833031, 38115927, 83499093, 264929221, 794787663, 2384362989, 7153088967, 21459266901]

約数ペア:

[(1, 21459266901), (3, 7153088967), (9, 2384362989), (27, 794787663), (81, 264929221), (257, 83499093), (563, 38115927), (771, 27833031), (1689, 12705309), (1831, 11719971), (2313, 9277677), (5067, 4235103), (5493, 3906657), (6939, 3092559), (15201, 1411701), (16479, 1302219), (20817, 1030853), (45603, 470567), (49437, 434073), (144691, 148311)]