21289265965

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1171}}^1\times {\mathrm{10663}}^1$

素因数の和:11881

約数の個数: 32

約数和(自身を含む): 28795871232

約数和(自身を除く): 7506605267

約数列:

[1, 5, 11, 31, 55, 155, 341, 1171, 1705, 5855, 10663, 12881, 36301, 53315, 64405, 117293, 181505, 330553, 399311, 586465, 1652765, 1996555, 3636083, 12486373, 18180415, 62431865, 137350103, 387077563, 686750515, 1935387815, 4257853193, 21289265965]

約数ペア:

[(1, 21289265965), (5, 4257853193), (11, 1935387815), (31, 686750515), (55, 387077563), (155, 137350103), (341, 62431865), (1171, 18180415), (1705, 12486373), (5855, 3636083), (10663, 1996555), (12881, 1652765), (36301, 586465), (53315, 399311), (64405, 330553), (117293, 181505)]