19784799

素因数分解:

$3^2\times {\mathrm{97}}^1\times {\mathrm{131}}^1\times {\mathrm{173}}^1$

素因数の和:407

約数の個数: 24

約数和(自身を含む): 29261232

約数和(自身を除く): 9476433

約数列:

[1, 3, 9, 97, 131, 173, 291, 393, 519, 873, 1179, 1557, 12707, 16781, 22663, 38121, 50343, 67989, 114363, 151029, 203967, 2198311, 6594933, 19784799]

約数ペア:

[(1, 19784799), (3, 6594933), (9, 2198311), (97, 203967), (131, 151029), (173, 114363), (291, 67989), (393, 50343), (519, 38121), (873, 22663), (1179, 16781), (1557, 12707)]