21378608

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{28429}}^1$

素因数の和:28484

約数の個数: 20

約数和(自身を含む): 42303840

約数和(自身を除く): 20925232

約数列:

[1, 2, 4, 8, 16, 47, 94, 188, 376, 752, 28429, 56858, 113716, 227432, 454864, 1336163, 2672326, 5344652, 10689304, 21378608]

約数ペア:

[(1, 21378608), (2, 10689304), (4, 5344652), (8, 2672326), (16, 1336163), (47, 454864), (94, 227432), (188, 113716), (376, 56858), (752, 28429)]