20257601

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 26492928

約数和(自身を除く): 6235327

約数列:

[1, 7, 13, 31, 43, 91, 167, 217, 301, 403, 559, 1169, 1333, 2171, 2821, 3913, 5177, 7181, 9331, 15197, 17329, 36239, 50267, 67301, 93353, 121303, 222611, 471107, 653471, 1558277, 2893943, 20257601]

約数ペア:

[(1, 20257601), (7, 2893943), (13, 1558277), (31, 653471), (43, 471107), (91, 222611), (167, 121303), (217, 93353), (301, 67301), (403, 50267), (559, 36239), (1169, 17329), (1333, 15197), (2171, 9331), (2821, 7181), (3913, 5177)]