19489815

素因数分解:

$3^6\times 5^1\times {\mathrm{5347}}^1$

素因数の和:5370

約数の個数: 28

約数和(自身を含む): 35072184

約数和(自身を除く): 15582369

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 5347, 16041, 26735, 48123, 80205, 144369, 240615, 433107, 721845, 1299321, 2165535, 3897963, 6496605, 19489815]

約数ペア:

[(1, 19489815), (3, 6496605), (5, 3897963), (9, 2165535), (15, 1299321), (27, 721845), (45, 433107), (81, 240615), (135, 144369), (243, 80205), (405, 48123), (729, 26735), (1215, 16041), (3645, 5347)]