21447979798

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{80631503}}^1$

素因数の和:80631531

約数の個数: 16

約数和(自身を含む): 38703121920

約数和(自身を除く): 17255142122

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 80631503, 161263006, 564420521, 1128841042, 1531998557, 3063997114, 10723989899, 21447979798]

約数ペア:

[(1, 21447979798), (2, 10723989899), (7, 3063997114), (14, 1531998557), (19, 1128841042), (38, 564420521), (133, 161263006), (266, 80631503)]