980978878

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{320791}}^1$

素因数の和:320943

約数の個数: 16

約数和(自身を含む): 1616791680

約数和(自身を除く): 635812802

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 320791, 641582, 3528701, 7057402, 44589949, 89179898, 490489439, 980978878]

約数ペア:

[(1, 980978878), (2, 490489439), (11, 89179898), (22, 44589949), (139, 7057402), (278, 3528701), (1529, 641582), (3058, 320791)]