209995918

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{1597}}^1$

素因数の和:1792

約数の個数: 32

約数和(自身を含む): 354372480

約数和(自身を除く): 144376562

約数列:

[1, 2, 11, 22, 43, 86, 139, 278, 473, 946, 1529, 1597, 3058, 3194, 5977, 11954, 17567, 35134, 65747, 68671, 131494, 137342, 221983, 443966, 755381, 1510762, 2441813, 4883626, 9545269, 19090538, 104997959, 209995918]

約数ペア:

[(1, 209995918), (2, 104997959), (11, 19090538), (22, 9545269), (43, 4883626), (86, 2441813), (139, 1510762), (278, 755381), (473, 443966), (946, 221983), (1529, 137342), (1597, 131494), (3058, 68671), (3194, 65747), (5977, 35134), (11954, 17567)]