31951881

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:167

約数の個数: 64

約数和(自身を含む): 54700800

約数和(自身を除く): 22748919

約数列:

[1, 3, 9, 13, 27, 29, 39, 43, 73, 87, 117, 129, 219, 261, 351, 377, 387, 559, 657, 783, 949, 1131, 1161, 1247, 1677, 1971, 2117, 2847, 3139, 3393, 3741, 5031, 6351, 8541, 9417, 10179, 11223, 15093, 16211, 19053, 25623, 27521, 28251, 33669, 40807, 48633, 57159, 82563, 84753, 91031, 122421, 145899, 247689, 273093, 367263, 437697, 743067, 819279, 1101789, 1183403, 2457837, 3550209, 10650627, 31951881]

約数ペア:

[(1, 31951881), (3, 10650627), (9, 3550209), (13, 2457837), (27, 1183403), (29, 1101789), (39, 819279), (43, 743067), (73, 437697), (87, 367263), (117, 273093), (129, 247689), (219, 145899), (261, 122421), (351, 91031), (377, 84753), (387, 82563), (559, 57159), (657, 48633), (783, 40807), (949, 33669), (1131, 28251), (1161, 27521), (1247, 25623), (1677, 19053), (1971, 16211), (2117, 15093), (2847, 11223), (3139, 10179), (3393, 9417), (3741, 8541), (5031, 6351)]