21289491

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{347}}^1\times {\mathrm{401}}^1$

素因数の和:771

約数の個数: 24

約数和(自身を含む): 32735664

約数和(自身を除く): 11446173

約数列:

[1, 3, 9, 17, 51, 153, 347, 401, 1041, 1203, 3123, 3609, 5899, 6817, 17697, 20451, 53091, 61353, 139147, 417441, 1252323, 2365499, 7096497, 21289491]

約数ペア:

[(1, 21289491), (3, 7096497), (9, 2365499), (17, 1252323), (51, 417441), (153, 139147), (347, 61353), (401, 53091), (1041, 20451), (1203, 17697), (3123, 6817), (3609, 5899)]