21047812

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{1549}}^1$

素因数の和:1675

約数の個数: 24

約数和(自身を含む): 38192000

約数和(自身を除く): 17144188

約数列:

[1, 2, 4, 43, 79, 86, 158, 172, 316, 1549, 3098, 3397, 6196, 6794, 13588, 66607, 122371, 133214, 244742, 266428, 489484, 5261953, 10523906, 21047812]

約数ペア:

[(1, 21047812), (2, 10523906), (4, 5261953), (43, 489484), (79, 266428), (86, 244742), (158, 133214), (172, 122371), (316, 66607), (1549, 13588), (3098, 6794), (3397, 6196)]