16788920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^2\times {\mathrm{227}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 38844360

約数和(自身を除く): 22055440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 227, 344, 430, 454, 860, 908, 1135, 1720, 1816, 1849, 2270, 3698, 4540, 7396, 9080, 9245, 9761, 14792, 18490, 19522, 36980, 39044, 48805, 73960, 78088, 97610, 195220, 390440, 419723, 839446, 1678892, 2098615, 3357784, 4197230, 8394460, 16788920]

約数ペア:

[(1, 16788920), (2, 8394460), (4, 4197230), (5, 3357784), (8, 2098615), (10, 1678892), (20, 839446), (40, 419723), (43, 390440), (86, 195220), (172, 97610), (215, 78088), (227, 73960), (344, 48805), (430, 39044), (454, 36980), (860, 19522), (908, 18490), (1135, 14792), (1720, 9761), (1816, 9245), (1849, 9080), (2270, 7396), (3698, 4540)]