20657181968

素因数分解:

$2^4\times {\mathrm{241}}^1\times {\mathrm{1979}}^1\times {\mathrm{2707}}^1$

素因数の和:4935

約数の個数: 40

約数和(自身を含む): 40224523680

約数和(自身を除く): 19567341712

約数列:

[1, 2, 4, 8, 16, 241, 482, 964, 1928, 1979, 2707, 3856, 3958, 5414, 7916, 10828, 15832, 21656, 31664, 43312, 476939, 652387, 953878, 1304774, 1907756, 2609548, 3815512, 5219096, 5357153, 7631024, 10438192, 10714306, 21428612, 42857224, 85714448, 1291073873, 2582147746, 5164295492, 10328590984, 20657181968]

約数ペア:

[(1, 20657181968), (2, 10328590984), (4, 5164295492), (8, 2582147746), (16, 1291073873), (241, 85714448), (482, 42857224), (964, 21428612), (1928, 10714306), (1979, 10438192), (2707, 7631024), (3856, 5357153), (3958, 5219096), (5414, 3815512), (7916, 2609548), (10828, 1907756), (15832, 1304774), (21656, 953878), (31664, 652387), (43312, 476939)]