20668569

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{2131}}^1$

素因数の和:2248

約数の個数: 16

約数和(自身を含む): 28551744

約数和(自身を除く): 7883175

約数列:

[1, 3, 53, 61, 159, 183, 2131, 3233, 6393, 9699, 112943, 129991, 338829, 389973, 6889523, 20668569]

約数ペア:

[(1, 20668569), (3, 6889523), (53, 389973), (61, 338829), (159, 129991), (183, 112943), (2131, 9699), (3233, 6393)]