17980403

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:160

約数の個数: 32

約数和(自身を含む): 23040000

約数和(自身を除く): 5059597

約数列:

[1, 7, 19, 31, 49, 89, 133, 217, 343, 589, 623, 931, 1519, 1691, 2759, 4123, 4361, 6517, 10633, 11837, 19313, 28861, 30527, 52421, 82859, 135191, 202027, 366947, 580013, 946337, 2568629, 17980403]

約数ペア:

[(1, 17980403), (7, 2568629), (19, 946337), (31, 580013), (49, 366947), (89, 202027), (133, 135191), (217, 82859), (343, 52421), (589, 30527), (623, 28861), (931, 19313), (1519, 11837), (1691, 10633), (2759, 6517), (4123, 4361)]