16212287

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{821}}^1$

素因数の和:879

約数の個数: 24

約数和(自身を含む): 20990592

約数和(自身を除く): 4778305

約数列:

[1, 7, 13, 31, 49, 91, 217, 403, 637, 821, 1519, 2821, 5747, 10673, 19747, 25451, 40229, 74711, 178157, 330863, 522977, 1247099, 2316041, 16212287]

約数ペア:

[(1, 16212287), (7, 2316041), (13, 1247099), (31, 522977), (49, 330863), (91, 178157), (217, 74711), (403, 40229), (637, 25451), (821, 19747), (1519, 10673), (2821, 5747)]