20500336

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{359}}^1$

素因数の和:493

約数の個数: 40

約数和(自身を含む): 41247360

約数和(自身を除く): 20747024

約数列:

[1, 2, 4, 8, 16, 43, 83, 86, 166, 172, 332, 344, 359, 664, 688, 718, 1328, 1436, 2872, 3569, 5744, 7138, 14276, 15437, 28552, 29797, 30874, 57104, 59594, 61748, 119188, 123496, 238376, 246992, 476752, 1281271, 2562542, 5125084, 10250168, 20500336]

約数ペア:

[(1, 20500336), (2, 10250168), (4, 5125084), (8, 2562542), (16, 1281271), (43, 476752), (83, 246992), (86, 238376), (166, 123496), (172, 119188), (332, 61748), (344, 59594), (359, 57104), (664, 30874), (688, 29797), (718, 28552), (1328, 15437), (1436, 14276), (2872, 7138), (3569, 5744)]