21972027

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{8647}}^1$

素因数の和:8679

約数の個数: 24

約数和(自身を含む): 36805888

約数和(自身を除く): 14833861

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 847, 2541, 8647, 25941, 60529, 95117, 181587, 285351, 665819, 1046287, 1997457, 3138861, 7324009, 21972027]

約数ペア:

[(1, 21972027), (3, 7324009), (7, 3138861), (11, 1997457), (21, 1046287), (33, 665819), (77, 285351), (121, 181587), (231, 95117), (363, 60529), (847, 25941), (2541, 8647)]