20510390

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{19913}}^1$

素因数の和:20023

約数の個数: 16

約数和(自身を含む): 37279008

約数和(自身を除く): 16768618

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 19913, 39826, 99565, 199130, 2051039, 4102078, 10255195, 20510390]

約数ペア:

[(1, 20510390), (2, 10255195), (5, 4102078), (10, 2051039), (103, 199130), (206, 99565), (515, 39826), (1030, 19913)]