20906901

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{607}}^1$

素因数の和:745

約数の個数: 24

約数和(自身を含む): 31299840

約数和(自身を除く): 10392939

約数列:

[1, 3, 9, 43, 89, 129, 267, 387, 607, 801, 1821, 3827, 5463, 11481, 26101, 34443, 54023, 78303, 162069, 234909, 486207, 2322989, 6968967, 20906901]

約数ペア:

[(1, 20906901), (3, 6968967), (9, 2322989), (43, 486207), (89, 234909), (129, 162069), (267, 78303), (387, 54023), (607, 34443), (801, 26101), (1821, 11481), (3827, 5463)]