20407791

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{1999}}^1$

素因数の和:2126

約数の個数: 16

約数和(自身を含む): 28224000

約数和(自身を除く): 7816209

約数列:

[1, 3, 41, 83, 123, 249, 1999, 3403, 5997, 10209, 81959, 165917, 245877, 497751, 6802597, 20407791]

約数ペア:

[(1, 20407791), (3, 6802597), (41, 497751), (83, 245877), (123, 165917), (249, 81959), (1999, 10209), (3403, 5997)]