80217320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^2\times {\mathrm{1193}}^1$

素因数の和:1286

約数の個数: 48

約数和(自身を含む): 185153580

約数和(自身を除く): 104936260

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1193, 1640, 1681, 2386, 3362, 4772, 5965, 6724, 8405, 9544, 11930, 13448, 16810, 23860, 33620, 47720, 48913, 67240, 97826, 195652, 244565, 391304, 489130, 978260, 1956520, 2005433, 4010866, 8021732, 10027165, 16043464, 20054330, 40108660, 80217320]

約数ペア:

[(1, 80217320), (2, 40108660), (4, 20054330), (5, 16043464), (8, 10027165), (10, 8021732), (20, 4010866), (40, 2005433), (41, 1956520), (82, 978260), (164, 489130), (205, 391304), (328, 244565), (410, 195652), (820, 97826), (1193, 67240), (1640, 48913), (1681, 47720), (2386, 33620), (3362, 23860), (4772, 16810), (5965, 13448), (6724, 11930), (8405, 9544)]