81780777

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{1709}}^1$

素因数の和:2137

約数の個数: 24

約数和(自身を含む): 127600200

約数和(自身を除く): 45819423

約数列:

[1, 3, 9, 13, 39, 117, 409, 1227, 1709, 3681, 5127, 5317, 15381, 15951, 22217, 47853, 66651, 199953, 698981, 2096943, 6290829, 9086753, 27260259, 81780777]

約数ペア:

[(1, 81780777), (3, 27260259), (9, 9086753), (13, 6290829), (39, 2096943), (117, 698981), (409, 199953), (1227, 66651), (1709, 47853), (3681, 22217), (5127, 15951), (5317, 15381)]