20491093

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1061}}^1$

素因数の和:1188

約数の個数: 16

約数和(自身を含む): 24468480

約数和(自身を除く): 3977387

約数列:

[1, 7, 31, 89, 217, 623, 1061, 2759, 7427, 19313, 32891, 94429, 230237, 661003, 2927299, 20491093]

約数ペア:

[(1, 20491093), (7, 2927299), (31, 661003), (89, 230237), (217, 94429), (623, 32891), (1061, 19313), (2759, 7427)]