21593655

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^2$

素因数の和:225

約数の個数: 48

約数和(自身を含む): 41070240

約数和(自身を除く): 19476585

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 97, 135, 153, 255, 291, 459, 485, 765, 873, 1455, 1649, 2295, 2619, 4365, 4947, 8245, 9409, 13095, 14841, 24735, 28227, 44523, 47045, 74205, 84681, 141135, 159953, 222615, 254043, 423405, 479859, 799765, 1270215, 1439577, 2399295, 4318731, 7197885, 21593655]

約数ペア:

[(1, 21593655), (3, 7197885), (5, 4318731), (9, 2399295), (15, 1439577), (17, 1270215), (27, 799765), (45, 479859), (51, 423405), (85, 254043), (97, 222615), (135, 159953), (153, 141135), (255, 84681), (291, 74205), (459, 47045), (485, 44523), (765, 28227), (873, 24735), (1455, 14841), (1649, 13095), (2295, 9409), (2619, 8245), (4365, 4947)]