21325768

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{85991}}^1$

素因数の和:86028

約数の個数: 16

約数和(自身を含む): 41276160

約数和(自身を除く): 19950392

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 85991, 171982, 343964, 687928, 2665721, 5331442, 10662884, 21325768]

約数ペア:

[(1, 21325768), (2, 10662884), (4, 5331442), (8, 2665721), (31, 687928), (62, 343964), (124, 171982), (248, 85991)]