21009879072021

素因数分解:

$3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{11241240809}}^1$

素因数の和:11241240908

約数の個数: 16

約数和(自身を含む): 32374773532800

約数和(自身を除く): 11364894460779

約数列:

[1, 3, 7, 21, 89, 267, 623, 1869, 11241240809, 33723722427, 78688685663, 236066056989, 1000470432001, 3001411296003, 7003293024007, 21009879072021]

約数ペア:

[(1, 21009879072021), (3, 7003293024007), (7, 3001411296003), (21, 1000470432001), (89, 236066056989), (267, 78688685663), (623, 33723722427), (1869, 11241240809)]