81382257

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{347}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 135502848

約数和(自身を除く): 54120591

約数列:

[1, 3, 9, 11, 23, 33, 69, 99, 103, 207, 253, 309, 347, 759, 927, 1041, 1133, 2277, 2369, 3123, 3399, 3817, 7107, 7981, 10197, 11451, 21321, 23943, 26059, 34353, 35741, 71829, 78177, 87791, 107223, 234531, 263373, 321669, 393151, 790119, 822043, 1179453, 2466129, 3538359, 7398387, 9042473, 27127419, 81382257]

約数ペア:

[(1, 81382257), (3, 27127419), (9, 9042473), (11, 7398387), (23, 3538359), (33, 2466129), (69, 1179453), (99, 822043), (103, 790119), (207, 393151), (253, 321669), (309, 263373), (347, 234531), (759, 107223), (927, 87791), (1041, 78177), (1133, 71829), (2277, 35741), (2369, 34353), (3123, 26059), (3399, 23943), (3817, 21321), (7107, 11451), (7981, 10197)]