2779515

素因数分解:

$3^4\times 5^1\times {\mathrm{6863}}^1$

素因数の和:6880

約数の個数: 20

約数和(自身を含む): 4983264

約数和(自身を除く): 2203749

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 6863, 20589, 34315, 61767, 102945, 185301, 308835, 555903, 926505, 2779515]

約数ペア:

[(1, 2779515), (3, 926505), (5, 555903), (9, 308835), (15, 185301), (27, 102945), (45, 61767), (81, 34315), (135, 20589), (405, 6863)]