389740897

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{138157}}^1$

素因数の和:138208

約数の個数: 16

約数和(自身を含む): 495158272

約数和(自身を除く): 105417375

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 138157, 967099, 1796041, 4282867, 12572287, 29980069, 55677271, 389740897]

約数ペア:

[(1, 389740897), (7, 55677271), (13, 29980069), (31, 12572287), (91, 4282867), (217, 1796041), (403, 967099), (2821, 138157)]