20915825

素因数分解:

$5^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1117}}^1$

素因数の和:1241

約数の個数: 24

約数和(自身を含む): 29944512

約数和(自身を除く): 9028687

約数列:

[1, 5, 7, 25, 35, 107, 175, 535, 749, 1117, 2675, 3745, 5585, 7819, 18725, 27925, 39095, 119519, 195475, 597595, 836633, 2987975, 4183165, 20915825]

約数ペア:

[(1, 20915825), (5, 4183165), (7, 2987975), (25, 836633), (35, 597595), (107, 195475), (175, 119519), (535, 39095), (749, 27925), (1117, 18725), (2675, 7819), (3745, 5585)]