18821761

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{3011}}^1$

素因数の和:3084

約数の個数: 16

約数和(自身を含む): 23132160

約数和(自身を除く): 4310399

約数列:

[1, 7, 19, 47, 133, 329, 893, 3011, 6251, 21077, 57209, 141517, 400463, 990619, 2688823, 18821761]

約数ペア:

[(1, 18821761), (7, 2688823), (19, 990619), (47, 400463), (133, 141517), (329, 57209), (893, 21077), (3011, 6251)]