21751371

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{971}}^1$

素因数の和:1127

約数の個数: 24

約数和(自身を含む): 33359040

約数和(自身を除く): 11607669

約数列:

[1, 3, 9, 19, 57, 131, 171, 393, 971, 1179, 2489, 2913, 7467, 8739, 18449, 22401, 55347, 127201, 166041, 381603, 1144809, 2416819, 7250457, 21751371]

約数ペア:

[(1, 21751371), (3, 7250457), (9, 2416819), (19, 1144809), (57, 381603), (131, 166041), (171, 127201), (393, 55347), (971, 22401), (1179, 18449), (2489, 8739), (2913, 7467)]