21441429

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8539}}^1$

素因数の和:8582

約数の個数: 20

約数和(自身を含む): 33066880

約数和(自身を除く): 11625451

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8539, 25617, 76851, 230553, 264709, 691659, 794127, 2382381, 7147143, 21441429]

約数ペア:

[(1, 21441429), (3, 7147143), (9, 2382381), (27, 794127), (31, 691659), (81, 264709), (93, 230553), (279, 76851), (837, 25617), (2511, 8539)]