21697569

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{463}}^1$

素因数の和:637

約数の個数: 24

約数和(自身を含む): 32428032

約数和(自身を除く): 10730463

約数列:

[1, 3, 9, 41, 123, 127, 369, 381, 463, 1143, 1389, 4167, 5207, 15621, 18983, 46863, 56949, 58801, 170847, 176403, 529209, 2410841, 7232523, 21697569]

約数ペア:

[(1, 21697569), (3, 7232523), (9, 2410841), (41, 529209), (123, 176403), (127, 170847), (369, 58801), (381, 56949), (463, 46863), (1143, 18983), (1389, 15621), (4167, 5207)]