81788889

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{337}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 138098688

約数和(自身を除く): 56309799

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 127, 147, 273, 337, 381, 637, 889, 1011, 1651, 1911, 2359, 2667, 4381, 4953, 6223, 7077, 11557, 13143, 16513, 18669, 30667, 34671, 42799, 49539, 80899, 92001, 128397, 214669, 242697, 299593, 556387, 644007, 898779, 1669161, 2097151, 3894709, 6291453, 11684127, 27262963, 81788889]

約数ペア:

[(1, 81788889), (3, 27262963), (7, 11684127), (13, 6291453), (21, 3894709), (39, 2097151), (49, 1669161), (91, 898779), (127, 644007), (147, 556387), (273, 299593), (337, 242697), (381, 214669), (637, 128397), (889, 92001), (1011, 80899), (1651, 49539), (1911, 42799), (2359, 34671), (2667, 30667), (4381, 18669), (4953, 16513), (6223, 13143), (7077, 11557)]