21009611

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{3361}}^1$

素因数の和:3434

約数の個数: 16

約数和(自身を含む): 25820160

約数和(自身を除く): 4810549

約数列:

[1, 7, 19, 47, 133, 329, 893, 3361, 6251, 23527, 63859, 157967, 447013, 1105769, 3001373, 21009611]

約数ペア:

[(1, 21009611), (7, 3001373), (19, 1105769), (47, 447013), (133, 157967), (329, 63859), (893, 23527), (3361, 6251)]