17920845

素因数分解:

$3^4\times 5^1\times {\mathrm{44249}}^1$

素因数の和:44266

約数の個数: 20

約数和(自身を含む): 32125500

約数和(自身を除く): 14204655

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 44249, 132747, 221245, 398241, 663735, 1194723, 1991205, 3584169, 5973615, 17920845]

約数ペア:

[(1, 17920845), (3, 5973615), (5, 3584169), (9, 1991205), (15, 1194723), (27, 663735), (45, 398241), (81, 221245), (135, 132747), (405, 44249)]