21008339710

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{110570209}}^1$

素因数の和:110570235

約数の個数: 16

約数和(自身を含む): 39805275600

約数和(自身を除く): 18796935890

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 110570209, 221140418, 552851045, 1105702090, 2100833971, 4201667942, 10504169855, 21008339710]

約数ペア:

[(1, 21008339710), (2, 10504169855), (5, 4201667942), (10, 2100833971), (19, 1105702090), (38, 552851045), (95, 221140418), (190, 110570209)]