28180911

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{347}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 43296768

約数和(自身を除く): 15115857

約数列:

[1, 3, 11, 23, 33, 69, 107, 253, 321, 347, 759, 1041, 1177, 2461, 3531, 3817, 7383, 7981, 11451, 23943, 27071, 37129, 81213, 87791, 111387, 263373, 408419, 853967, 1225257, 2561901, 9393637, 28180911]

約数ペア:

[(1, 28180911), (3, 9393637), (11, 2561901), (23, 1225257), (33, 853967), (69, 408419), (107, 263373), (253, 111387), (321, 87791), (347, 81213), (759, 37129), (1041, 27071), (1177, 23943), (2461, 11451), (3531, 7981), (3817, 7383)]