21185848

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{64591}}^1$

素因数の和:64638

約数の個数: 16

約数和(自身を含む): 40692960

約数和(自身を除く): 19507112

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 64591, 129182, 258364, 516728, 2648231, 5296462, 10592924, 21185848]

約数ペア:

[(1, 21185848), (2, 10592924), (4, 5296462), (8, 2648231), (41, 516728), (82, 258364), (164, 129182), (328, 64591)]