21387102

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{193}}^1$

素因数の和:305

約数の個数: 64

約数和(自身を含む): 49614336

約数和(自身を除く): 28227234

約数列:

[1, 2, 3, 6, 11, 22, 23, 33, 46, 66, 69, 73, 138, 146, 193, 219, 253, 386, 438, 506, 579, 759, 803, 1158, 1518, 1606, 1679, 2123, 2409, 3358, 4246, 4439, 4818, 5037, 6369, 8878, 10074, 12738, 13317, 14089, 18469, 26634, 28178, 36938, 42267, 48829, 55407, 84534, 97658, 110814, 146487, 154979, 292974, 309958, 324047, 464937, 648094, 929874, 972141, 1944282, 3564517, 7129034, 10693551, 21387102]

約数ペア:

[(1, 21387102), (2, 10693551), (3, 7129034), (6, 3564517), (11, 1944282), (22, 972141), (23, 929874), (33, 648094), (46, 464937), (66, 324047), (69, 309958), (73, 292974), (138, 154979), (146, 146487), (193, 110814), (219, 97658), (253, 84534), (386, 55407), (438, 48829), (506, 42267), (579, 36938), (759, 28178), (803, 26634), (1158, 18469), (1518, 14089), (1606, 13317), (1679, 12738), (2123, 10074), (2409, 8878), (3358, 6369), (4246, 5037), (4439, 4818)]