20165864

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{199}}^1\times {\mathrm{239}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 18714136

約数列:

[1, 2, 4, 8, 53, 106, 199, 212, 239, 398, 424, 478, 796, 956, 1592, 1912, 10547, 12667, 21094, 25334, 42188, 47561, 50668, 84376, 95122, 101336, 190244, 380488, 2520733, 5041466, 10082932, 20165864]

約数ペア:

[(1, 20165864), (2, 10082932), (4, 5041466), (8, 2520733), (53, 380488), (106, 190244), (199, 101336), (212, 95122), (239, 84376), (398, 50668), (424, 47561), (478, 42188), (796, 25334), (956, 21094), (1592, 12667), (1912, 10547)]