1388973747

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{263}}^1\times {\mathrm{971}}^1$

素因数の和:1288

約数の個数: 48

約数和(自身を含む): 2223251712

約数和(自身を除く): 834277965

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 263, 777, 789, 971, 1813, 1841, 2913, 5439, 5523, 6797, 9731, 12887, 20391, 29193, 35927, 38661, 47579, 68117, 107781, 142737, 204351, 251489, 255373, 476819, 754467, 766119, 1430457, 1760423, 1787611, 5281269, 5362833, 9448801, 12513277, 28346403, 37539831, 66141607, 198424821, 462991249, 1388973747]

約数ペア:

[(1, 1388973747), (3, 462991249), (7, 198424821), (21, 66141607), (37, 37539831), (49, 28346403), (111, 12513277), (147, 9448801), (259, 5362833), (263, 5281269), (777, 1787611), (789, 1760423), (971, 1430457), (1813, 766119), (1841, 754467), (2913, 476819), (5439, 255373), (5523, 251489), (6797, 204351), (9731, 142737), (12887, 107781), (20391, 68117), (29193, 47579), (35927, 38661)]