21705564

素因数分解:

$2^2\times 3^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 52397856

約数和(自身を除く): 30692292

約数列:

[1, 2, 3, 4, 6, 12, 41, 82, 123, 157, 164, 246, 281, 314, 471, 492, 562, 628, 843, 942, 1124, 1686, 1884, 3372, 6437, 11521, 12874, 19311, 23042, 25748, 34563, 38622, 44117, 46084, 69126, 77244, 88234, 132351, 138252, 176468, 264702, 529404, 1808797, 3617594, 5426391, 7235188, 10852782, 21705564]

約数ペア:

[(1, 21705564), (2, 10852782), (3, 7235188), (4, 5426391), (6, 3617594), (12, 1808797), (41, 529404), (82, 264702), (123, 176468), (157, 138252), (164, 132351), (246, 88234), (281, 77244), (314, 69126), (471, 46084), (492, 44117), (562, 38622), (628, 34563), (843, 25748), (942, 23042), (1124, 19311), (1686, 12874), (1884, 11521), (3372, 6437)]