20828664

素因数分解:

$2^3\times 3^4\times {\mathrm{32143}}^1$

素因数の和:32161

約数の個数: 40

約数和(自身を含む): 58341360

約数和(自身を除く): 37512696

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648, 32143, 64286, 96429, 128572, 192858, 257144, 289287, 385716, 578574, 771432, 867861, 1157148, 1735722, 2314296, 2603583, 3471444, 5207166, 6942888, 10414332, 20828664]

約数ペア:

[(1, 20828664), (2, 10414332), (3, 6942888), (4, 5207166), (6, 3471444), (8, 2603583), (9, 2314296), (12, 1735722), (18, 1157148), (24, 867861), (27, 771432), (36, 578574), (54, 385716), (72, 289287), (81, 257144), (108, 192858), (162, 128572), (216, 96429), (324, 64286), (648, 32143)]