21186710

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{111509}}^1$

素因数の和:111535

約数の個数: 16

約数和(自身を含む): 40143600

約数和(自身を除く): 18956890

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 111509, 223018, 557545, 1115090, 2118671, 4237342, 10593355, 21186710]

約数ペア:

[(1, 21186710), (2, 10593355), (5, 4237342), (10, 2118671), (19, 1115090), (38, 557545), (95, 223018), (190, 111509)]