28158507

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 46606560

約数和(自身を除く): 18448053

約数列:

[1, 3, 9, 13, 29, 39, 43, 87, 117, 129, 193, 261, 377, 387, 559, 579, 1131, 1247, 1677, 1737, 2509, 3393, 3741, 5031, 5597, 7527, 8299, 11223, 16211, 16791, 22581, 24897, 48633, 50373, 72761, 74691, 107887, 145899, 218283, 240671, 323661, 654849, 722013, 970983, 2166039, 3128723, 9386169, 28158507]

約数ペア:

[(1, 28158507), (3, 9386169), (9, 3128723), (13, 2166039), (29, 970983), (39, 722013), (43, 654849), (87, 323661), (117, 240671), (129, 218283), (193, 145899), (261, 107887), (377, 74691), (387, 72761), (559, 50373), (579, 48633), (1131, 24897), (1247, 22581), (1677, 16791), (1737, 16211), (2509, 11223), (3393, 8299), (3741, 7527), (5031, 5597)]