20120457

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{997}}^1$

素因数の和:1069

約数の個数: 24

約数和(自身を含む): 31712448

約数和(自身を除く): 11591991

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 961, 997, 2883, 2991, 6727, 6979, 20181, 20937, 30907, 92721, 216349, 649047, 958117, 2874351, 6706819, 20120457]

約数ペア:

[(1, 20120457), (3, 6706819), (7, 2874351), (21, 958117), (31, 649047), (93, 216349), (217, 92721), (651, 30907), (961, 20937), (997, 20181), (2883, 6979), (2991, 6727)]