20564439

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{1019}}^1$

素因数の和:1091

約数の個数: 24

約数和(自身を含む): 32411520

約数和(自身を除く): 11847081

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 961, 1019, 2883, 3057, 6727, 7133, 20181, 21399, 31589, 94767, 221123, 663369, 979259, 2937777, 6854813, 20564439]

約数ペア:

[(1, 20564439), (3, 6854813), (7, 2937777), (21, 979259), (31, 663369), (93, 221123), (217, 94767), (651, 31589), (961, 21399), (1019, 20181), (2883, 7133), (3057, 6727)]