21172361

素因数分解:

$7^3\times {\mathrm{17}}^1\times {\mathrm{3631}}^1$

素因数の和:3669

約数の個数: 16

約数和(自身を含む): 26150400

約数和(自身を除く): 4978039

約数列:

[1, 7, 17, 49, 119, 343, 833, 3631, 5831, 25417, 61727, 177919, 432089, 1245433, 3024623, 21172361]

約数ペア:

[(1, 21172361), (7, 3024623), (17, 1245433), (49, 432089), (119, 177919), (343, 61727), (833, 25417), (3631, 5831)]