19785195

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{233}}^1$

素因数の和:301

約数の個数: 64

約数和(自身を含む): 38413440

約数和(自身を除く): 18628245

約数列:

[1, 3, 5, 9, 15, 17, 27, 37, 45, 51, 85, 111, 135, 153, 185, 233, 255, 333, 459, 555, 629, 699, 765, 999, 1165, 1665, 1887, 2097, 2295, 3145, 3495, 3961, 4995, 5661, 6291, 8621, 9435, 10485, 11883, 16983, 19805, 25863, 28305, 31455, 35649, 43105, 59415, 77589, 84915, 106947, 129315, 146557, 178245, 232767, 387945, 439671, 534735, 732785, 1163835, 1319013, 2198355, 3957039, 6595065, 19785195]

約数ペア:

[(1, 19785195), (3, 6595065), (5, 3957039), (9, 2198355), (15, 1319013), (17, 1163835), (27, 732785), (37, 534735), (45, 439671), (51, 387945), (85, 232767), (111, 178245), (135, 146557), (153, 129315), (185, 106947), (233, 84915), (255, 77589), (333, 59415), (459, 43105), (555, 35649), (629, 31455), (699, 28305), (765, 25863), (999, 19805), (1165, 16983), (1665, 11883), (1887, 10485), (2097, 9435), (2295, 8621), (3145, 6291), (3495, 5661), (3961, 4995)]