20868911

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{1117}}^1$

素因数の和:1298

約数の個数: 16

約数和(自身を含む): 25436736

約数和(自身を除く): 4567825

約数列:

[1, 7, 17, 119, 157, 1099, 1117, 2669, 7819, 18683, 18989, 132923, 175369, 1227583, 2981273, 20868911]

約数ペア:

[(1, 20868911), (7, 2981273), (17, 1227583), (119, 175369), (157, 132923), (1099, 18989), (1117, 18683), (2669, 7819)]