20872418

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{31721}}^1$

素因数の和:31777

約数の個数: 16

約数和(自身を含む): 36543744

約数和(自身を除く): 15671326

約数列:

[1, 2, 7, 14, 47, 94, 329, 658, 31721, 63442, 222047, 444094, 1490887, 2981774, 10436209, 20872418]

約数ペア:

[(1, 20872418), (2, 10436209), (7, 2981774), (14, 1490887), (47, 444094), (94, 222047), (329, 63442), (658, 31721)]