16205265

素因数分解:

$3^4\times 5^1\times {\mathrm{40013}}^1$

素因数の和:40030

約数の個数: 20

約数和(自身を含む): 29050164

約数和(自身を除く): 12844899

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 40013, 120039, 200065, 360117, 600195, 1080351, 1800585, 3241053, 5401755, 16205265]

約数ペア:

[(1, 16205265), (3, 5401755), (5, 3241053), (9, 1800585), (15, 1080351), (27, 600195), (45, 360117), (81, 200065), (135, 120039), (405, 40013)]