19585640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{193}}^1$

素因数の和:306

約数の個数: 64

約数和(自身を含む): 46094400

約数和(自身を除く): 26508760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 59, 86, 118, 172, 193, 215, 236, 295, 344, 386, 430, 472, 590, 772, 860, 965, 1180, 1544, 1720, 1930, 2360, 2537, 3860, 5074, 7720, 8299, 10148, 11387, 12685, 16598, 20296, 22774, 25370, 33196, 41495, 45548, 50740, 56935, 66392, 82990, 91096, 101480, 113870, 165980, 227740, 331960, 455480, 489641, 979282, 1958564, 2448205, 3917128, 4896410, 9792820, 19585640]

約数ペア:

[(1, 19585640), (2, 9792820), (4, 4896410), (5, 3917128), (8, 2448205), (10, 1958564), (20, 979282), (40, 489641), (43, 455480), (59, 331960), (86, 227740), (118, 165980), (172, 113870), (193, 101480), (215, 91096), (236, 82990), (295, 66392), (344, 56935), (386, 50740), (430, 45548), (472, 41495), (590, 33196), (772, 25370), (860, 22774), (965, 20296), (1180, 16598), (1544, 12685), (1720, 11387), (1930, 10148), (2360, 8299), (2537, 7720), (3860, 5074)]