18840272

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{641}}^1$

素因数の和:827

約数の個数: 40

約数和(自身を含む): 40122432

約数和(自身を除く): 21282160

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 167, 176, 334, 641, 668, 1282, 1336, 1837, 2564, 2672, 3674, 5128, 7051, 7348, 10256, 14102, 14696, 28204, 29392, 56408, 107047, 112816, 214094, 428188, 856376, 1177517, 1712752, 2355034, 4710068, 9420136, 18840272]

約数ペア:

[(1, 18840272), (2, 9420136), (4, 4710068), (8, 2355034), (11, 1712752), (16, 1177517), (22, 856376), (44, 428188), (88, 214094), (167, 112816), (176, 107047), (334, 56408), (641, 29392), (668, 28204), (1282, 14696), (1336, 14102), (1837, 10256), (2564, 7348), (2672, 7051), (3674, 5128)]