18786416

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{617}}^1$

素因数の和:809

約数の個数: 40

約数和(自身を含む): 40001904

約数和(自身を除く): 21215488

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 173, 176, 346, 617, 692, 1234, 1384, 1903, 2468, 2768, 3806, 4936, 6787, 7612, 9872, 13574, 15224, 27148, 30448, 54296, 106741, 108592, 213482, 426964, 853928, 1174151, 1707856, 2348302, 4696604, 9393208, 18786416]

約数ペア:

[(1, 18786416), (2, 9393208), (4, 4696604), (8, 2348302), (11, 1707856), (16, 1174151), (22, 853928), (44, 426964), (88, 213482), (173, 108592), (176, 106741), (346, 54296), (617, 30448), (692, 27148), (1234, 15224), (1384, 13574), (1903, 9872), (2468, 7612), (2768, 6787), (3806, 4936)]