81275425

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{42221}}^1$

素因数の和:42249

約数の個数: 24

約数和(自身を含む): 125652672

約数和(自身を除く): 44377247

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 42221, 211105, 295547, 464431, 1055525, 1477735, 2322155, 3251017, 7388675, 11610775, 16255085, 81275425]

約数ペア:

[(1, 81275425), (5, 16255085), (7, 11610775), (11, 7388675), (25, 3251017), (35, 2322155), (55, 1477735), (77, 1055525), (175, 464431), (275, 295547), (385, 211105), (1925, 42221)]