208575

素因数分解:

$3^4\times 5^2\times {\mathrm{103}}^1$

素因数の和:125

約数の個数: 30

約数和(自身を含む): 390104

約数和(自身を除く): 181529

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 103, 135, 225, 309, 405, 515, 675, 927, 1545, 2025, 2575, 2781, 4635, 7725, 8343, 13905, 23175, 41715, 69525, 208575]

約数ペア:

[(1, 208575), (3, 69525), (5, 41715), (9, 23175), (15, 13905), (25, 8343), (27, 7725), (45, 4635), (75, 2781), (81, 2575), (103, 2025), (135, 1545), (225, 927), (309, 675), (405, 515)]