198991864

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{68903}}^1$

素因数の和:68947

約数の個数: 24

約数和(自身を含む): 393786360

約数和(自身を除く): 194794496

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 361, 722, 1444, 2888, 68903, 137806, 275612, 551224, 1309157, 2618314, 5236628, 10473256, 24873983, 49747966, 99495932, 198991864]

約数ペア:

[(1, 198991864), (2, 99495932), (4, 49747966), (8, 24873983), (19, 10473256), (38, 5236628), (76, 2618314), (152, 1309157), (361, 551224), (722, 275612), (1444, 137806), (2888, 68903)]