20865350

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{643}}^1$

素因数の和:725

約数の個数: 48

約数和(自身を含む): 43122240

約数和(自身を除く): 22256890

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 59, 110, 118, 275, 295, 550, 590, 643, 649, 1286, 1298, 1475, 2950, 3215, 3245, 6430, 6490, 7073, 14146, 16075, 16225, 32150, 32450, 35365, 37937, 70730, 75874, 176825, 189685, 353650, 379370, 417307, 834614, 948425, 1896850, 2086535, 4173070, 10432675, 20865350]

約数ペア:

[(1, 20865350), (2, 10432675), (5, 4173070), (10, 2086535), (11, 1896850), (22, 948425), (25, 834614), (50, 417307), (55, 379370), (59, 353650), (110, 189685), (118, 176825), (275, 75874), (295, 70730), (550, 37937), (590, 35365), (643, 32450), (649, 32150), (1286, 16225), (1298, 16075), (1475, 14146), (2950, 7073), (3215, 6490), (3245, 6430)]