20953009

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{6637}}^1$

素因数の和:6696

約数の個数: 16

約数和(自身を含む): 26764416

約数和(自身を除く): 5811407

約数列:

[1, 7, 11, 41, 77, 287, 451, 3157, 6637, 46459, 73007, 272117, 511049, 1904819, 2993287, 20953009]

約数ペア:

[(1, 20953009), (7, 2993287), (11, 1904819), (41, 511049), (77, 272117), (287, 73007), (451, 46459), (3157, 6637)]