21000340864

素因数分解:

$2^7\times {\mathrm{164065163}}^1$

素因数の和:164065177

約数の個数: 16

約数和(自身を含む): 41836616820

約数和(自身を除く): 20836275956

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 164065163, 328130326, 656260652, 1312521304, 2625042608, 5250085216, 10500170432, 21000340864]

約数ペア:

[(1, 21000340864), (2, 10500170432), (4, 5250085216), (8, 2625042608), (16, 1312521304), (32, 656260652), (64, 328130326), (128, 164065163)]