20719391

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{6563}}^1$

素因数の和:6622

約数の個数: 16

約数和(自身を含む): 26466048

約数和(自身を除く): 5746657

約数列:

[1, 7, 11, 41, 77, 287, 451, 3157, 6563, 45941, 72193, 269083, 505351, 1883581, 2959913, 20719391]

約数ペア:

[(1, 20719391), (7, 2959913), (11, 1883581), (41, 505351), (77, 269083), (287, 72193), (451, 45941), (3157, 6563)]