20578192

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{281}}^1$

素因数の和:511

約数の個数: 40

約数和(自身を含む): 41961600

約数和(自身を除く): 21383408

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 199, 281, 368, 398, 562, 796, 1124, 1592, 2248, 3184, 4496, 4577, 6463, 9154, 12926, 18308, 25852, 36616, 51704, 55919, 73232, 103408, 111838, 223676, 447352, 894704, 1286137, 2572274, 5144548, 10289096, 20578192]

約数ペア:

[(1, 20578192), (2, 10289096), (4, 5144548), (8, 2572274), (16, 1286137), (23, 894704), (46, 447352), (92, 223676), (184, 111838), (199, 103408), (281, 73232), (368, 55919), (398, 51704), (562, 36616), (796, 25852), (1124, 18308), (1592, 12926), (2248, 9154), (3184, 6463), (4496, 4577)]