20404761

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{7369}}^1$

素因数の和:7456

約数の個数: 16

約数和(自身を含む): 29715840

約数和(自身を除く): 9311079

約数列:

[1, 3, 13, 39, 71, 213, 923, 2769, 7369, 22107, 95797, 287391, 523199, 1569597, 6801587, 20404761]

約数ペア:

[(1, 20404761), (3, 6801587), (13, 1569597), (39, 523199), (71, 287391), (213, 95797), (923, 22107), (2769, 7369)]