20237945

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2341}}^1$

素因数の和:2385

約数の個数: 32

約数和(自身を含む): 31476480

約数和(自身を除く): 11238535

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 247, 455, 665, 1235, 1729, 2341, 8645, 11705, 16387, 30433, 44479, 81935, 152165, 213031, 222395, 311353, 578227, 1065155, 1556765, 2891135, 4047589, 20237945]

約数ペア:

[(1, 20237945), (5, 4047589), (7, 2891135), (13, 1556765), (19, 1065155), (35, 578227), (65, 311353), (91, 222395), (95, 213031), (133, 152165), (247, 81935), (455, 44479), (665, 30433), (1235, 16387), (1729, 11705), (2341, 8645)]