81397725

素因数分解:

$3^1\times 5^2\times {\mathrm{617}}^1\times {\mathrm{1759}}^1$

素因数の和:2389

約数の個数: 24

約数和(自身を含む): 134872320

約数和(自身を除く): 53474595

約数列:

[1, 3, 5, 15, 25, 75, 617, 1759, 1851, 3085, 5277, 8795, 9255, 15425, 26385, 43975, 46275, 131925, 1085303, 3255909, 5426515, 16279545, 27132575, 81397725]

約数ペア:

[(1, 81397725), (3, 27132575), (5, 16279545), (15, 5426515), (25, 3255909), (75, 1085303), (617, 131925), (1759, 46275), (1851, 43975), (3085, 26385), (5277, 15425), (8795, 9255)]