978885

素因数分解:

$3^4\times 5^1\times {\mathrm{2417}}^1$

素因数の和:2434

約数の個数: 20

約数和(自身を含む): 1755468

約数和(自身を除く): 776583

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 2417, 7251, 12085, 21753, 36255, 65259, 108765, 195777, 326295, 978885]

約数ペア:

[(1, 978885), (3, 326295), (5, 195777), (9, 108765), (15, 65259), (27, 36255), (45, 21753), (81, 12085), (135, 7251), (405, 2417)]