20731557

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{12821}}^1$

素因数の和:12849

約数の個数: 24

約数和(自身を含む): 35080992

約数和(自身を除く): 14349435

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 12821, 38463, 89747, 141031, 269241, 423093, 628229, 987217, 1884687, 2961651, 6910519, 20731557]

約数ペア:

[(1, 20731557), (3, 6910519), (7, 2961651), (11, 1884687), (21, 987217), (33, 628229), (49, 423093), (77, 269241), (147, 141031), (231, 89747), (539, 38463), (1617, 12821)]