821401217

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{475073}}^1$

素因数の和:475112

約数の個数: 16

約数和(自身を含む): 1064165760

約数和(自身を除く): 242764543

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 475073, 3325511, 6175949, 9026387, 43231643, 63184709, 117343031, 821401217]

約数ペア:

[(1, 821401217), (7, 117343031), (13, 63184709), (19, 43231643), (91, 9026387), (133, 6175949), (247, 3325511), (1729, 475073)]