1813291280

素因数分解:

$2^4\times 5^1\times {\mathrm{22666141}}^1$

素因数の和:22666154

約数の個数: 20

約数和(自身を含む): 4215902412

約数和(自身を除く): 2402611132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 22666141, 45332282, 90664564, 113330705, 181329128, 226661410, 362658256, 453322820, 906645640, 1813291280]

約数ペア:

[(1, 1813291280), (2, 906645640), (4, 453322820), (5, 362658256), (8, 226661410), (10, 181329128), (16, 113330705), (20, 90664564), (40, 45332282), (80, 22666141)]