21291939

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{439}}^1$

素因数の和:779

約数の個数: 24

約数和(自身を含む): 32741280

約数和(自身を除く): 11449341

約数列:

[1, 3, 9, 17, 51, 153, 317, 439, 951, 1317, 2853, 3951, 5389, 7463, 16167, 22389, 48501, 67167, 139163, 417489, 1252467, 2365771, 7097313, 21291939]

約数ペア:

[(1, 21291939), (3, 7097313), (9, 2365771), (17, 1252467), (51, 417489), (153, 139163), (317, 67167), (439, 48501), (951, 22389), (1317, 16167), (2853, 7463), (3951, 5389)]