81279704

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{2143}}^1$

素因数の和:2591

約数の個数: 32

約数和(自身を含む): 166717440

約数和(自身を除く): 85437736

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 431, 862, 1724, 2143, 3448, 4286, 4741, 8572, 9482, 17144, 18964, 23573, 37928, 47146, 94292, 188584, 923633, 1847266, 3694532, 7389064, 10159963, 20319926, 40639852, 81279704]

約数ペア:

[(1, 81279704), (2, 40639852), (4, 20319926), (8, 10159963), (11, 7389064), (22, 3694532), (44, 1847266), (88, 923633), (431, 188584), (862, 94292), (1724, 47146), (2143, 37928), (3448, 23573), (4286, 18964), (4741, 17144), (8572, 9482)]