20862569

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{3229}}^1$

素因数の和:3320

約数の個数: 16

約数和(自身を含む): 26046720

約数和(自身を除く): 5184151

約数列:

[1, 7, 13, 71, 91, 497, 923, 3229, 6461, 22603, 41977, 229259, 293839, 1604813, 2980367, 20862569]

約数ペア:

[(1, 20862569), (7, 2980367), (13, 1604813), (71, 293839), (91, 229259), (497, 41977), (923, 22603), (3229, 6461)]