221427717

素因数分解:

$3^1\times 7^2\times {\mathrm{173}}^1\times {\mathrm{8707}}^1$

素因数の和:8897

約数の個数: 24

約数和(自身を含む): 345463776

約数和(自身を除く): 124036059

約数列:

[1, 3, 7, 21, 49, 147, 173, 519, 1211, 3633, 8477, 8707, 25431, 26121, 60949, 182847, 426643, 1279929, 1506311, 4518933, 10544177, 31632531, 73809239, 221427717]

約数ペア:

[(1, 221427717), (3, 73809239), (7, 31632531), (21, 10544177), (49, 4518933), (147, 1506311), (173, 1279929), (519, 426643), (1211, 182847), (3633, 60949), (8477, 26121), (8707, 25431)]