20518065

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{26821}}^1$

素因数の和:26849

約数の個数: 24

約数和(自身を含む): 37658088

約数和(自身を除く): 17140023

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 26821, 80463, 134105, 241389, 402315, 455957, 1206945, 1367871, 2279785, 4103613, 6839355, 20518065]

約数ペア:

[(1, 20518065), (3, 6839355), (5, 4103613), (9, 2279785), (15, 1367871), (17, 1206945), (45, 455957), (51, 402315), (85, 241389), (153, 134105), (255, 80463), (765, 26821)]