21339232

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{269}}^1$

素因数の和:383

約数の個数: 48

約数和(自身を含む): 43953840

約数和(自身を除く): 22614608

約数列:

[1, 2, 4, 8, 16, 32, 37, 67, 74, 134, 148, 268, 269, 296, 536, 538, 592, 1072, 1076, 1184, 2144, 2152, 2479, 4304, 4958, 8608, 9916, 9953, 18023, 19832, 19906, 36046, 39664, 39812, 72092, 79328, 79624, 144184, 159248, 288368, 318496, 576736, 666851, 1333702, 2667404, 5334808, 10669616, 21339232]

約数ペア:

[(1, 21339232), (2, 10669616), (4, 5334808), (8, 2667404), (16, 1333702), (32, 666851), (37, 576736), (67, 318496), (74, 288368), (134, 159248), (148, 144184), (268, 79624), (269, 79328), (296, 72092), (536, 39812), (538, 39664), (592, 36046), (1072, 19906), (1076, 19832), (1184, 18023), (2144, 9953), (2152, 9916), (2479, 8608), (4304, 4958)]