19439721

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{2593}}^1$

素因数の和:2630

約数の個数: 36

約数和(自身を含む): 34598772

約数和(自身を除く): 15159051

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 153, 357, 441, 833, 1071, 2499, 2593, 7497, 7779, 18151, 23337, 44081, 54453, 127057, 132243, 163359, 308567, 381171, 396729, 925701, 1143513, 2159969, 2777103, 6479907, 19439721]

約数ペア:

[(1, 19439721), (3, 6479907), (7, 2777103), (9, 2159969), (17, 1143513), (21, 925701), (49, 396729), (51, 381171), (63, 308567), (119, 163359), (147, 132243), (153, 127057), (357, 54453), (441, 44081), (833, 23337), (1071, 18151), (2499, 7779), (2593, 7497)]