20081439

素因数分解:

$3^4\times 7^1\times {\mathrm{107}}^1\times {\mathrm{331}}^1$

素因数の和:457

約数の個数: 40

約数和(自身を含む): 34708608

約数和(自身を除く): 14627169

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 107, 189, 321, 331, 567, 749, 963, 993, 2247, 2317, 2889, 2979, 6741, 6951, 8667, 8937, 20223, 20853, 26811, 35417, 60669, 62559, 106251, 187677, 247919, 318753, 743757, 956259, 2231271, 2868777, 6693813, 20081439]

約数ペア:

[(1, 20081439), (3, 6693813), (7, 2868777), (9, 2231271), (21, 956259), (27, 743757), (63, 318753), (81, 247919), (107, 187677), (189, 106251), (321, 62559), (331, 60669), (567, 35417), (749, 26811), (963, 20853), (993, 20223), (2247, 8937), (2317, 8667), (2889, 6951), (2979, 6741)]