21090597

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{167}}^1$

素因数の和:313

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 10842843

約数列:

[1, 3, 11, 33, 43, 89, 129, 167, 267, 473, 501, 979, 1419, 1837, 2937, 3827, 5511, 7181, 11481, 14863, 21543, 42097, 44589, 78991, 126291, 163493, 236973, 490479, 639109, 1917327, 7030199, 21090597]

約数ペア:

[(1, 21090597), (3, 7030199), (11, 1917327), (33, 639109), (43, 490479), (89, 236973), (129, 163493), (167, 126291), (267, 78991), (473, 44589), (501, 42097), (979, 21543), (1419, 14863), (1837, 11481), (2937, 7181), (3827, 5511)]