21000391706

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{78948841}}^1$

素因数の和:78948869

約数の個数: 16

約数和(自身を含む): 37895444160

約数和(自身を除く): 16895052454

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 78948841, 157897682, 552641887, 1105283774, 1500027979, 3000055958, 10500195853, 21000391706]

約数ペア:

[(1, 21000391706), (2, 10500195853), (7, 3000055958), (14, 1500027979), (19, 1105283774), (38, 552641887), (133, 157897682), (266, 78948841)]