20902629

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{647}}^1$

素因数の和:761

約数の個数: 24

約数和(自身を含む): 31026240

約数和(自身を除く): 10123611

約数列:

[1, 3, 11, 33, 89, 121, 267, 363, 647, 979, 1941, 2937, 7117, 10769, 21351, 32307, 57583, 78287, 172749, 234861, 633413, 1900239, 6967543, 20902629]

約数ペア:

[(1, 20902629), (3, 6967543), (11, 1900239), (33, 633413), (89, 234861), (121, 172749), (267, 78287), (363, 57583), (647, 32307), (979, 21351), (1941, 10769), (2937, 7117)]