208403920

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{593}}^1$

素因数の和:820

約数の個数: 80

約数和(自身を含む): 509110272

約数和(自身を除く): 300706352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 191, 230, 368, 382, 460, 593, 764, 920, 955, 1186, 1528, 1840, 1910, 2372, 2965, 3056, 3820, 4393, 4744, 5930, 7640, 8786, 9488, 11860, 13639, 15280, 17572, 21965, 23720, 27278, 35144, 43930, 47440, 54556, 68195, 70288, 87860, 109112, 113263, 136390, 175720, 218224, 226526, 272780, 351440, 453052, 545560, 566315, 906104, 1091120, 1132630, 1812208, 2265260, 2605049, 4530520, 5210098, 9061040, 10420196, 13025245, 20840392, 26050490, 41680784, 52100980, 104201960, 208403920]

約数ペア:

[(1, 208403920), (2, 104201960), (4, 52100980), (5, 41680784), (8, 26050490), (10, 20840392), (16, 13025245), (20, 10420196), (23, 9061040), (40, 5210098), (46, 4530520), (80, 2605049), (92, 2265260), (115, 1812208), (184, 1132630), (191, 1091120), (230, 906104), (368, 566315), (382, 545560), (460, 453052), (593, 351440), (764, 272780), (920, 226526), (955, 218224), (1186, 175720), (1528, 136390), (1840, 113263), (1910, 109112), (2372, 87860), (2965, 70288), (3056, 68195), (3820, 54556), (4393, 47440), (4744, 43930), (5930, 35144), (7640, 27278), (8786, 23720), (9488, 21965), (11860, 17572), (13639, 15280)]