20989671

素因数分解:

$3^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1\times {\mathrm{619}}^1$

素因数の和:838

約数の個数: 16

約数和(自身を含む): 28569600

約数和(自身を除く): 7579929

約数列:

[1, 3, 89, 127, 267, 381, 619, 1857, 11303, 33909, 55091, 78613, 165273, 235839, 6996557, 20989671]

約数ペア:

[(1, 20989671), (3, 6996557), (89, 235839), (127, 165273), (267, 78613), (381, 55091), (619, 33909), (1857, 11303)]