639508728

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{3947}}^1$

素因数の和:4156

約数の個数: 64

約数和(自身を含む): 1646789760

約数和(自身を除く): 1007281032

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 129, 157, 172, 258, 314, 344, 471, 516, 628, 942, 1032, 1256, 1884, 3768, 3947, 6751, 7894, 11841, 13502, 15788, 20253, 23682, 27004, 31576, 40506, 47364, 54008, 81012, 94728, 162024, 169721, 339442, 509163, 619679, 678884, 1018326, 1239358, 1357768, 1859037, 2036652, 2478716, 3718074, 4073304, 4957432, 7436148, 14872296, 26646197, 53292394, 79938591, 106584788, 159877182, 213169576, 319754364, 639508728]

約数ペア:

[(1, 639508728), (2, 319754364), (3, 213169576), (4, 159877182), (6, 106584788), (8, 79938591), (12, 53292394), (24, 26646197), (43, 14872296), (86, 7436148), (129, 4957432), (157, 4073304), (172, 3718074), (258, 2478716), (314, 2036652), (344, 1859037), (471, 1357768), (516, 1239358), (628, 1018326), (942, 678884), (1032, 619679), (1256, 509163), (1884, 339442), (3768, 169721), (3947, 162024), (6751, 94728), (7894, 81012), (11841, 54008), (13502, 47364), (15788, 40506), (20253, 31576), (23682, 27004)]