18894544

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{947}}^1$

素因数の和:1027

約数の個数: 40

約数和(自身を含む): 38792160

約数和(自身を除く): 19897616

約数列:

[1, 2, 4, 8, 16, 29, 43, 58, 86, 116, 172, 232, 344, 464, 688, 947, 1247, 1894, 2494, 3788, 4988, 7576, 9976, 15152, 19952, 27463, 40721, 54926, 81442, 109852, 162884, 219704, 325768, 439408, 651536, 1180909, 2361818, 4723636, 9447272, 18894544]

約数ペア:

[(1, 18894544), (2, 9447272), (4, 4723636), (8, 2361818), (16, 1180909), (29, 651536), (43, 439408), (58, 325768), (86, 219704), (116, 162884), (172, 109852), (232, 81442), (344, 54926), (464, 40721), (688, 27463), (947, 19952), (1247, 15152), (1894, 9976), (2494, 7576), (3788, 4988)]