20671398

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^2\times {\mathrm{9491}}^1$

素因数の和:9521

約数の個数: 36

約数和(自身を含む): 49235004

約数和(自身を除く): 28563606

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 121, 198, 242, 363, 726, 1089, 2178, 9491, 18982, 28473, 56946, 85419, 104401, 170838, 208802, 313203, 626406, 939609, 1148411, 1879218, 2296822, 3445233, 6890466, 10335699, 20671398]

約数ペア:

[(1, 20671398), (2, 10335699), (3, 6890466), (6, 3445233), (9, 2296822), (11, 1879218), (18, 1148411), (22, 939609), (33, 626406), (66, 313203), (99, 208802), (121, 170838), (198, 104401), (242, 85419), (363, 56946), (726, 28473), (1089, 18982), (2178, 9491)]