20676505

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{349}}^1$

素因数の和:429

約数の個数: 24

約数和(自身を含む): 27077400

約数和(自身を除く): 6400895

約数列:

[1, 5, 17, 41, 85, 205, 289, 349, 697, 1445, 1745, 3485, 5933, 11849, 14309, 29665, 59245, 71545, 100861, 243253, 504305, 1216265, 4135301, 20676505]

約数ペア:

[(1, 20676505), (5, 4135301), (17, 1216265), (41, 504305), (85, 243253), (205, 100861), (289, 71545), (349, 59245), (697, 29665), (1445, 14309), (1745, 11849), (3485, 5933)]