28758405

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1061}}^1$

素因数の和:1221

約数の個数: 32

約数和(自身を含む): 49956480

約数和(自身を除く): 21198075

約数列:

[1, 3, 5, 13, 15, 39, 65, 139, 195, 417, 695, 1061, 1807, 2085, 3183, 5305, 5421, 9035, 13793, 15915, 27105, 41379, 68965, 147479, 206895, 442437, 737395, 1917227, 2212185, 5751681, 9586135, 28758405]

約数ペア:

[(1, 28758405), (3, 9586135), (5, 5751681), (13, 2212185), (15, 1917227), (39, 737395), (65, 442437), (139, 206895), (195, 147479), (417, 68965), (695, 41379), (1061, 27105), (1807, 15915), (2085, 13793), (3183, 9035), (5305, 5421)]