208720981

素因数分解:

$7^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1\times {\mathrm{1061}}^1$

素因数の和:1404

約数の個数: 16

約数和(自身を含む): 241626240

約数和(自身を除く): 32905259

約数列:

[1, 7, 157, 179, 1061, 1099, 1253, 7427, 28103, 166577, 189919, 196721, 1166039, 1329433, 29817283, 208720981]

約数ペア:

[(1, 208720981), (7, 29817283), (157, 1329433), (179, 1166039), (1061, 196721), (1099, 189919), (1253, 166577), (7427, 28103)]