31148559

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{20479}}^1$

素因数の和:20511

約数の個数: 18

約数和(自身を含む): 48721920

約数和(自身を除く): 17573361

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 20479, 61437, 184311, 266227, 798681, 2396043, 3460951, 10382853, 31148559]

約数ペア:

[(1, 31148559), (3, 10382853), (9, 3460951), (13, 2396043), (39, 798681), (117, 266227), (169, 184311), (507, 61437), (1521, 20479)]