16249815

素因数分解:

$3^4\times 5^1\times {\mathrm{40123}}^1$

素因数の和:40140

約数の個数: 20

約数和(自身を含む): 29130024

約数和(自身を除く): 12880209

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 40123, 120369, 200615, 361107, 601845, 1083321, 1805535, 3249963, 5416605, 16249815]

約数ペア:

[(1, 16249815), (3, 5416605), (5, 3249963), (9, 1805535), (15, 1083321), (27, 601845), (45, 361107), (81, 200615), (135, 120369), (405, 40123)]