21754719

素因数分解:

$3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2719}}^1$

素因数の和:2859

約数の個数: 24

約数和(自身を含む): 36208640

約数和(自身を除く): 14453921

約数列:

[1, 3, 7, 9, 21, 63, 127, 381, 889, 1143, 2667, 2719, 8001, 8157, 19033, 24471, 57099, 171297, 345313, 1035939, 2417191, 3107817, 7251573, 21754719]

約数ペア:

[(1, 21754719), (3, 7251573), (7, 3107817), (9, 2417191), (21, 1035939), (63, 345313), (127, 171297), (381, 57099), (889, 24471), (1143, 19033), (2667, 8157), (2719, 8001)]