20843163

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:329

約数の個数: 40

約数和(自身を含む): 34412400

約数和(自身を除く): 13569237

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 149, 157, 297, 447, 471, 891, 1341, 1413, 1639, 1727, 4023, 4239, 4917, 5181, 12069, 12717, 14751, 15543, 23393, 44253, 46629, 70179, 132759, 139887, 210537, 257323, 631611, 771969, 1894833, 2315907, 6947721, 20843163]

約数ペア:

[(1, 20843163), (3, 6947721), (9, 2315907), (11, 1894833), (27, 771969), (33, 631611), (81, 257323), (99, 210537), (149, 139887), (157, 132759), (297, 70179), (447, 46629), (471, 44253), (891, 23393), (1341, 15543), (1413, 14751), (1639, 12717), (1727, 12069), (4023, 5181), (4239, 4917)]