20697719

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{1187}}^1$

素因数の和:1294

約数の個数: 16

約数和(自身を含む): 24634368

約数和(自身を除く): 3936649

約数列:

[1, 7, 47, 53, 329, 371, 1187, 2491, 8309, 17437, 55789, 62911, 390523, 440377, 2956817, 20697719]

約数ペア:

[(1, 20697719), (7, 2956817), (47, 440377), (53, 390523), (329, 62911), (371, 55789), (1187, 17437), (2491, 8309)]