28380807

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11551}}^1$

素因数の和:11580

約数の個数: 32

約数和(自身を含む): 51752960

約数和(自身を除く): 23372153

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 11551, 34653, 80857, 103959, 150163, 242571, 311877, 450489, 727713, 1051141, 1351467, 2183139, 3153423, 4054401, 9460269, 28380807]

約数ペア:

[(1, 28380807), (3, 9460269), (7, 4054401), (9, 3153423), (13, 2183139), (21, 1351467), (27, 1051141), (39, 727713), (63, 450489), (91, 311877), (117, 242571), (189, 150163), (273, 103959), (351, 80857), (819, 34653), (2457, 11551)]