28912545

素因数分解:

$3^4\times 5^1\times {\mathrm{71389}}^1$

素因数の和:71406

約数の個数: 20

約数和(自身を含む): 51829140

約数和(自身を除く): 22916595

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 71389, 214167, 356945, 642501, 1070835, 1927503, 3212505, 5782509, 9637515, 28912545]

約数ペア:

[(1, 28912545), (3, 9637515), (5, 5782509), (9, 3212505), (15, 1927503), (27, 1070835), (45, 642501), (81, 356945), (135, 214167), (405, 71389)]