20451857881

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1\times {\mathrm{1193}}^1$

素因数の和:1406

約数の個数: 64

約数和(自身を含む): 26702807040

約数和(自身を除く): 6250949159

約数列:

[1, 7, 13, 31, 59, 91, 103, 217, 403, 413, 721, 767, 1193, 1339, 1829, 2821, 3193, 5369, 6077, 8351, 9373, 12803, 15509, 22351, 23777, 36983, 41509, 42539, 70387, 79001, 108563, 122879, 166439, 188387, 258881, 290563, 480779, 492709, 553007, 860153, 915031, 1318709, 1597427, 2181997, 2449031, 3365453, 3809249, 6405217, 7249861, 11181989, 15273979, 17143217, 26664743, 28365961, 49520237, 50749027, 94248193, 198561727, 224745691, 346641659, 659737351, 1573219837, 2921693983, 20451857881]

約数ペア:

[(1, 20451857881), (7, 2921693983), (13, 1573219837), (31, 659737351), (59, 346641659), (91, 224745691), (103, 198561727), (217, 94248193), (403, 50749027), (413, 49520237), (721, 28365961), (767, 26664743), (1193, 17143217), (1339, 15273979), (1829, 11181989), (2821, 7249861), (3193, 6405217), (5369, 3809249), (6077, 3365453), (8351, 2449031), (9373, 2181997), (12803, 1597427), (15509, 1318709), (22351, 915031), (23777, 860153), (36983, 553007), (41509, 492709), (42539, 480779), (70387, 290563), (79001, 258881), (108563, 188387), (122879, 166439)]