21189735

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1319}}^1$

素因数の和:1357

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 24429465

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 45, 51, 63, 85, 105, 119, 135, 153, 189, 255, 315, 357, 459, 595, 765, 945, 1071, 1319, 1785, 2295, 3213, 3957, 5355, 6595, 9233, 11871, 16065, 19785, 22423, 27699, 35613, 46165, 59355, 67269, 83097, 112115, 138495, 156961, 178065, 201807, 249291, 336345, 415485, 470883, 605421, 784805, 1009035, 1246455, 1412649, 2354415, 3027105, 4237947, 7063245, 21189735]

約数ペア:

[(1, 21189735), (3, 7063245), (5, 4237947), (7, 3027105), (9, 2354415), (15, 1412649), (17, 1246455), (21, 1009035), (27, 784805), (35, 605421), (45, 470883), (51, 415485), (63, 336345), (85, 249291), (105, 201807), (119, 178065), (135, 156961), (153, 138495), (189, 112115), (255, 83097), (315, 67269), (357, 59355), (459, 46165), (595, 35613), (765, 27699), (945, 22423), (1071, 19785), (1319, 16065), (1785, 11871), (2295, 9233), (3213, 6595), (3957, 5355)]