21381613

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{691}}^1$

素因数の和:828

約数の個数: 16

約数和(自身を含む): 24413760

約数和(自身を除く): 3032147

約数列:

[1, 11, 29, 97, 319, 691, 1067, 2813, 7601, 20039, 30943, 67027, 220429, 737297, 1943783, 21381613]

約数ペア:

[(1, 21381613), (11, 1943783), (29, 737297), (97, 220429), (319, 67027), (691, 30943), (1067, 20039), (2813, 7601)]