664375959

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{51157}}^1$

素因数の和:51216

約数の個数: 32

約数和(自身を含む): 1088642240

約数和(自身を除く): 424266281

約数列:

[1, 3, 9, 13, 27, 37, 39, 111, 117, 333, 351, 481, 999, 1443, 4329, 12987, 51157, 153471, 460413, 665041, 1381239, 1892809, 1995123, 5678427, 5985369, 17035281, 17956107, 24606517, 51105843, 73819551, 221458653, 664375959]

約数ペア:

[(1, 664375959), (3, 221458653), (9, 73819551), (13, 51105843), (27, 24606517), (37, 17956107), (39, 17035281), (111, 5985369), (117, 5678427), (333, 1995123), (351, 1892809), (481, 1381239), (999, 665041), (1443, 460413), (4329, 153471), (12987, 51157)]