21789621

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3719}}^1$

素因数の和:3766

約数の個数: 32

約数和(自身を含む): 38092800

約数和(自身を除く): 16303179

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 93, 189, 217, 279, 651, 837, 1953, 3719, 5859, 11157, 26033, 33471, 78099, 100413, 115289, 234297, 345867, 702891, 807023, 1037601, 2421069, 3112803, 7263207, 21789621]

約数ペア:

[(1, 21789621), (3, 7263207), (7, 3112803), (9, 2421069), (21, 1037601), (27, 807023), (31, 702891), (63, 345867), (93, 234297), (189, 115289), (217, 100413), (279, 78099), (651, 33471), (837, 26033), (1953, 11157), (3719, 5859)]