20217496

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2663}}^1$

素因数の和:2755

約数の個数: 32

約数和(自身を含む): 41398560

約数和(自身を除く): 21181064

約数列:

[1, 2, 4, 8, 13, 26, 52, 73, 104, 146, 292, 584, 949, 1898, 2663, 3796, 5326, 7592, 10652, 21304, 34619, 69238, 138476, 194399, 276952, 388798, 777596, 1555192, 2527187, 5054374, 10108748, 20217496]

約数ペア:

[(1, 20217496), (2, 10108748), (4, 5054374), (8, 2527187), (13, 1555192), (26, 777596), (52, 388798), (73, 276952), (104, 194399), (146, 138476), (292, 69238), (584, 34619), (949, 21304), (1898, 10652), (2663, 7592), (3796, 5326)]