18493720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{257}}^2$

素因数の和:532

約数の個数: 48

約数和(自身を含む): 47741040

約数和(自身を除く): 29247320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 257, 280, 514, 1028, 1285, 1799, 2056, 2570, 3598, 5140, 7196, 8995, 10280, 14392, 17990, 35980, 66049, 71960, 132098, 264196, 330245, 462343, 528392, 660490, 924686, 1320980, 1849372, 2311715, 2641960, 3698744, 4623430, 9246860, 18493720]

約数ペア:

[(1, 18493720), (2, 9246860), (4, 4623430), (5, 3698744), (7, 2641960), (8, 2311715), (10, 1849372), (14, 1320980), (20, 924686), (28, 660490), (35, 528392), (40, 462343), (56, 330245), (70, 264196), (140, 132098), (257, 71960), (280, 66049), (514, 35980), (1028, 17990), (1285, 14392), (1799, 10280), (2056, 8995), (2570, 7196), (3598, 5140)]