20399918

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{953}}^1$

素因数の和:1112

約数の個数: 32

約数和(自身を含む): 38465280

約数和(自身を除く): 18065362

約数列:

[1, 2, 7, 11, 14, 22, 77, 139, 154, 278, 953, 973, 1529, 1906, 1946, 3058, 6671, 10483, 10703, 13342, 20966, 21406, 73381, 132467, 146762, 264934, 927269, 1457137, 1854538, 2914274, 10199959, 20399918]

約数ペア:

[(1, 20399918), (2, 10199959), (7, 2914274), (11, 1854538), (14, 1457137), (22, 927269), (77, 264934), (139, 146762), (154, 132467), (278, 73381), (953, 21406), (973, 20966), (1529, 13342), (1906, 10703), (1946, 10483), (3058, 6671)]