20149745

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{263}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 10263055

約数列:

[1, 5, 7, 11, 35, 55, 77, 199, 263, 385, 995, 1315, 1393, 1841, 2189, 2893, 6965, 9205, 10945, 14465, 15323, 20251, 52337, 76615, 101255, 261685, 366359, 575707, 1831795, 2878535, 4029949, 20149745]

約数ペア:

[(1, 20149745), (5, 4029949), (7, 2878535), (11, 1831795), (35, 575707), (55, 366359), (77, 261685), (199, 101255), (263, 76615), (385, 52337), (995, 20251), (1315, 15323), (1393, 14465), (1841, 10945), (2189, 9205), (2893, 6965)]