21700552

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{199}}^1\times {\mathrm{317}}^1$

素因数の和:565

約数の個数: 32

約数和(自身を含む): 41976000

約数和(自身を除く): 20275448

約数列:

[1, 2, 4, 8, 43, 86, 172, 199, 317, 344, 398, 634, 796, 1268, 1592, 2536, 8557, 13631, 17114, 27262, 34228, 54524, 63083, 68456, 109048, 126166, 252332, 504664, 2712569, 5425138, 10850276, 21700552]

約数ペア:

[(1, 21700552), (2, 10850276), (4, 5425138), (8, 2712569), (43, 504664), (86, 252332), (172, 126166), (199, 109048), (317, 68456), (344, 63083), (398, 54524), (634, 34228), (796, 27262), (1268, 17114), (1592, 13631), (2536, 8557)]