20903589

素因数分解:

$3^5\times 7^1\times {\mathrm{12289}}^1$

素因数の和:12311

約数の個数: 24

約数和(自身を含む): 35788480

約数和(自身を除く): 14884891

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12289, 36867, 86023, 110601, 258069, 331803, 774207, 995409, 2322621, 2986227, 6967863, 20903589]

約数ペア:

[(1, 20903589), (3, 6967863), (7, 2986227), (9, 2322621), (21, 995409), (27, 774207), (63, 331803), (81, 258069), (189, 110601), (243, 86023), (567, 36867), (1701, 12289)]