20317073

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{2381}}^1$

素因数の和:2464

約数の個数: 16

約数和(自身を含む): 24696576

約数和(自身を除く): 4379503

約数列:

[1, 7, 23, 53, 161, 371, 1219, 2381, 8533, 16667, 54763, 126193, 383341, 883351, 2902439, 20317073]

約数ペア:

[(1, 20317073), (7, 2902439), (23, 883351), (53, 383341), (161, 126193), (371, 54763), (1219, 16667), (2381, 8533)]