21901061

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 28680960

約数和(自身を除く): 6779899

約数列:

[1, 7, 13, 29, 43, 91, 193, 203, 301, 377, 559, 1247, 1351, 2509, 2639, 3913, 5597, 8299, 8729, 16211, 17563, 39179, 58093, 72761, 107887, 113477, 240671, 509327, 755209, 1684697, 3128723, 21901061]

約数ペア:

[(1, 21901061), (7, 3128723), (13, 1684697), (29, 755209), (43, 509327), (91, 240671), (193, 113477), (203, 107887), (301, 72761), (377, 58093), (559, 39179), (1247, 17563), (1351, 16211), (2509, 8729), (2639, 8299), (3913, 5597)]