18521216

素因数分解:

$2^7\times 7^2\times {\mathrm{2953}}^1$

素因数の和:2981

約数の個数: 48

約数和(自身を含む): 42936390

約数和(自身を除く): 24415174

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 392, 448, 784, 896, 1568, 2953, 3136, 5906, 6272, 11812, 20671, 23624, 41342, 47248, 82684, 94496, 144697, 165368, 188992, 289394, 330736, 377984, 578788, 661472, 1157576, 1322944, 2315152, 2645888, 4630304, 9260608, 18521216]

約数ペア:

[(1, 18521216), (2, 9260608), (4, 4630304), (7, 2645888), (8, 2315152), (14, 1322944), (16, 1157576), (28, 661472), (32, 578788), (49, 377984), (56, 330736), (64, 289394), (98, 188992), (112, 165368), (128, 144697), (196, 94496), (224, 82684), (392, 47248), (448, 41342), (784, 23624), (896, 20671), (1568, 11812), (2953, 6272), (3136, 5906)]