20503881

素因数分解:

$3^3\times {\mathrm{109}}^1\times {\mathrm{6967}}^1$

素因数の和:7085

約数の個数: 16

約数和(自身を含む): 30659200

約数和(自身を除く): 10155319

約数列:

[1, 3, 9, 27, 109, 327, 981, 2943, 6967, 20901, 62703, 188109, 759403, 2278209, 6834627, 20503881]

約数ペア:

[(1, 20503881), (3, 6834627), (9, 2278209), (27, 759403), (109, 188109), (327, 62703), (981, 20901), (2943, 6967)]