20887065

素因数分解:

$3^5\times 5^1\times {\mathrm{17191}}^1$

素因数の和:17211

約数の個数: 24

約数和(自身を含む): 37547328

約数和(自身を除く): 16660263

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17191, 51573, 85955, 154719, 257865, 464157, 773595, 1392471, 2320785, 4177413, 6962355, 20887065]

約数ペア:

[(1, 20887065), (3, 6962355), (5, 4177413), (9, 2320785), (15, 1392471), (27, 773595), (45, 464157), (81, 257865), (135, 154719), (243, 85955), (405, 51573), (1215, 17191)]