17939428

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 35392896

約数和(自身を除く): 17453468

約数列:

[1, 2, 4, 13, 26, 43, 52, 71, 86, 113, 142, 172, 226, 284, 452, 559, 923, 1118, 1469, 1846, 2236, 2938, 3053, 3692, 4859, 5876, 6106, 8023, 9718, 12212, 16046, 19436, 32092, 39689, 63167, 79378, 104299, 126334, 158756, 208598, 252668, 344989, 417196, 689978, 1379956, 4484857, 8969714, 17939428]

約数ペア:

[(1, 17939428), (2, 8969714), (4, 4484857), (13, 1379956), (26, 689978), (43, 417196), (52, 344989), (71, 252668), (86, 208598), (113, 158756), (142, 126334), (172, 104299), (226, 79378), (284, 63167), (452, 39689), (559, 32092), (923, 19436), (1118, 16046), (1469, 12212), (1846, 9718), (2236, 8023), (2938, 6106), (3053, 5876), (3692, 4859)]