20785005

素因数分解:

$3^5\times 5^1\times {\mathrm{17107}}^1$

素因数の和:17127

約数の個数: 24

約数和(自身を含む): 37363872

約数和(自身を除く): 16578867

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17107, 51321, 85535, 153963, 256605, 461889, 769815, 1385667, 2309445, 4157001, 6928335, 20785005]

約数ペア:

[(1, 20785005), (3, 6928335), (5, 4157001), (9, 2309445), (15, 1385667), (27, 769815), (45, 461889), (81, 256605), (135, 153963), (243, 85535), (405, 51321), (1215, 17107)]