20659509

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{829}}^1$

素因数の和:922

約数の個数: 32

約数和(自身を含む): 33465600

約数和(自身を除く): 12806091

約数列:

[1, 3, 9, 13, 27, 39, 71, 117, 213, 351, 639, 829, 923, 1917, 2487, 2769, 7461, 8307, 10777, 22383, 24921, 32331, 58859, 96993, 176577, 290979, 529731, 765167, 1589193, 2295501, 6886503, 20659509]

約数ペア:

[(1, 20659509), (3, 6886503), (9, 2295501), (13, 1589193), (27, 765167), (39, 529731), (71, 290979), (117, 176577), (213, 96993), (351, 58859), (639, 32331), (829, 24921), (923, 22383), (1917, 10777), (2487, 8307), (2769, 7461)]