81647225

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{6317}}^1$

素因数の和:6385

約数の個数: 24

約数和(自身を含む): 112814208

約数和(自身を除く): 31166983

約数列:

[1, 5, 11, 25, 47, 55, 235, 275, 517, 1175, 2585, 6317, 12925, 31585, 69487, 157925, 296899, 347435, 1484495, 1737175, 3265889, 7422475, 16329445, 81647225]

約数ペア:

[(1, 81647225), (5, 16329445), (11, 7422475), (25, 3265889), (47, 1737175), (55, 1484495), (235, 347435), (275, 296899), (517, 157925), (1175, 69487), (2585, 31585), (6317, 12925)]