20840283

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 34369920

約数和(自身を除く): 13529637

約数列:

[1, 3, 9, 17, 19, 51, 57, 67, 107, 153, 171, 201, 321, 323, 603, 963, 969, 1139, 1273, 1819, 2033, 2907, 3417, 3819, 5457, 6099, 7169, 10251, 11457, 16371, 18297, 21507, 21641, 34561, 64521, 64923, 103683, 121873, 136211, 194769, 311049, 365619, 408633, 1096857, 1225899, 2315587, 6946761, 20840283]

約数ペア:

[(1, 20840283), (3, 6946761), (9, 2315587), (17, 1225899), (19, 1096857), (51, 408633), (57, 365619), (67, 311049), (107, 194769), (153, 136211), (171, 121873), (201, 103683), (321, 64923), (323, 64521), (603, 34561), (963, 21641), (969, 21507), (1139, 18297), (1273, 16371), (1819, 11457), (2033, 10251), (2907, 7169), (3417, 6099), (3819, 5457)]