20386790

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{19793}}^1$

素因数の和:19903

約数の個数: 16

約数和(自身を含む): 37054368

約数和(自身を除く): 16667578

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 19793, 39586, 98965, 197930, 2038679, 4077358, 10193395, 20386790]

約数ペア:

[(1, 20386790), (2, 10193395), (5, 4077358), (10, 2038679), (103, 197930), (206, 98965), (515, 39586), (1030, 19793)]