20828311

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1811}}^1$

素因数の和:1902

約数の個数: 16

約数和(自身を含む): 25049088

約数和(自身を除く): 4220777

約数列:

[1, 7, 31, 53, 217, 371, 1643, 1811, 11501, 12677, 56141, 95983, 392987, 671881, 2975473, 20828311]

約数ペア:

[(1, 20828311), (7, 2975473), (31, 671881), (53, 392987), (217, 95983), (371, 56141), (1643, 12677), (1811, 11501)]