20809179

素因数分解:

$3^2\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1$

素因数の和:491

約数の個数: 24

約数和(自身を含む): 30859920

約数和(自身を除く): 10050741

約数列:

[1, 3, 9, 83, 89, 249, 267, 313, 747, 801, 939, 2817, 7387, 22161, 25979, 27857, 66483, 77937, 83571, 233811, 250713, 2312131, 6936393, 20809179]

約数ペア:

[(1, 20809179), (3, 6936393), (9, 2312131), (83, 250713), (89, 233811), (249, 83571), (267, 77937), (313, 66483), (747, 27857), (801, 25979), (939, 22161), (2817, 7387)]