20712105

素因数分解:

$3^5\times 5^1\times {\mathrm{17047}}^1$

素因数の和:17067

約数の個数: 24

約数和(自身を含む): 37232832

約数和(自身を除く): 16520727

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17047, 51141, 85235, 153423, 255705, 460269, 767115, 1380807, 2301345, 4142421, 6904035, 20712105]

約数ペア:

[(1, 20712105), (3, 6904035), (5, 4142421), (9, 2301345), (15, 1380807), (27, 767115), (45, 460269), (81, 255705), (135, 153423), (243, 85235), (405, 51141), (1215, 17047)]