81209919

素因数分解:

$3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{43451}}^1$

素因数の和:43550

約数の個数: 16

約数和(自身を含む): 125141760

約数和(自身を除く): 43931841

約数列:

[1, 3, 7, 21, 89, 267, 623, 1869, 43451, 130353, 304157, 912471, 3867139, 11601417, 27069973, 81209919]

約数ペア:

[(1, 81209919), (3, 27069973), (7, 11601417), (21, 3867139), (89, 912471), (267, 304157), (623, 130353), (1869, 43451)]