21112311

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{17291}}^1$

素因数の和:17342

約数の個数: 16

約数和(自身を含む): 31540608

約数和(自身を除く): 10428297

約数列:

[1, 3, 11, 33, 37, 111, 407, 1221, 17291, 51873, 190201, 570603, 639767, 1919301, 7037437, 21112311]

約数ペア:

[(1, 21112311), (3, 7037437), (11, 1919301), (33, 639767), (37, 570603), (111, 190201), (407, 51873), (1221, 17291)]