871965

素因数分解:

$3^4\times 5^1\times {\mathrm{2153}}^1$

素因数の和:2170

約数の個数: 20

約数和(自身を含む): 1563804

約数和(自身を除く): 691839

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 2153, 6459, 10765, 19377, 32295, 58131, 96885, 174393, 290655, 871965]

約数ペア:

[(1, 871965), (3, 290655), (5, 174393), (9, 96885), (15, 58131), (27, 32295), (45, 19377), (81, 10765), (135, 6459), (405, 2153)]