21116043

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{13883}}^1$

素因数の和:13915

約数の個数: 18

約数和(自身を含む): 33030036

約数和(自身を除く): 11913993

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 13883, 41649, 124947, 180479, 541437, 1624311, 2346227, 7038681, 21116043]

約数ペア:

[(1, 21116043), (3, 7038681), (9, 2346227), (13, 1624311), (39, 541437), (117, 180479), (169, 124947), (507, 41649), (1521, 13883)]