21175965

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9227}}^1$

素因数の和:9258

約数の個数: 32

約数和(自身を含む): 39864960

約数和(自身を除く): 18688995

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 9227, 27681, 46135, 83043, 138405, 156859, 249129, 415215, 470577, 784295, 1245645, 1411731, 2352885, 4235193, 7058655, 21175965]

約数ペア:

[(1, 21175965), (3, 7058655), (5, 4235193), (9, 2352885), (15, 1411731), (17, 1245645), (27, 784295), (45, 470577), (51, 415215), (85, 249129), (135, 156859), (153, 138405), (255, 83043), (459, 46135), (765, 27681), (2295, 9227)]