28452879

素因数分解:

$3^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{709}}^1$

素因数の和:749

約数の個数: 48

約数和(自身を含む): 51688000

約数和(自身を除く): 23235121

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 343, 441, 637, 709, 819, 1029, 1911, 2127, 3087, 4459, 4963, 5733, 6381, 9217, 13377, 14889, 27651, 34741, 40131, 44667, 64519, 82953, 104223, 193557, 243187, 312669, 451633, 580671, 729561, 1354899, 2188683, 3161431, 4064697, 9484293, 28452879]

約数ペア:

[(1, 28452879), (3, 9484293), (7, 4064697), (9, 3161431), (13, 2188683), (21, 1354899), (39, 729561), (49, 580671), (63, 451633), (91, 312669), (117, 243187), (147, 193557), (273, 104223), (343, 82953), (441, 64519), (637, 44667), (709, 40131), (819, 34741), (1029, 27651), (1911, 14889), (2127, 13377), (3087, 9217), (4459, 6381), (4963, 5733)]