28326207

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:212

約数の個数: 64

約数和(自身を含む): 50462720

約数和(自身を除く): 22136513

約数列:

[1, 3, 7, 13, 19, 21, 39, 43, 57, 91, 127, 129, 133, 247, 273, 301, 381, 399, 559, 741, 817, 889, 903, 1651, 1677, 1729, 2413, 2451, 2667, 3913, 4953, 5187, 5461, 5719, 7239, 10621, 11557, 11739, 16383, 16891, 17157, 31369, 31863, 34671, 38227, 50673, 70993, 74347, 94107, 103759, 114681, 212979, 219583, 223041, 311277, 496951, 658749, 726313, 1348867, 1490853, 2178939, 4046601, 9442069, 28326207]

約数ペア:

[(1, 28326207), (3, 9442069), (7, 4046601), (13, 2178939), (19, 1490853), (21, 1348867), (39, 726313), (43, 658749), (57, 496951), (91, 311277), (127, 223041), (129, 219583), (133, 212979), (247, 114681), (273, 103759), (301, 94107), (381, 74347), (399, 70993), (559, 50673), (741, 38227), (817, 34671), (889, 31863), (903, 31369), (1651, 17157), (1677, 16891), (1729, 16383), (2413, 11739), (2451, 11557), (2667, 10621), (3913, 7239), (4953, 5719), (5187, 5461)]