21392505

素因数分解:

$3^6\times 5^1\times {\mathrm{5869}}^1$

素因数の和:5892

約数の個数: 28

約数和(自身を含む): 38495460

約数和(自身を除く): 17102955

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 5869, 17607, 29345, 52821, 88035, 158463, 264105, 475389, 792315, 1426167, 2376945, 4278501, 7130835, 21392505]

約数ペア:

[(1, 21392505), (3, 7130835), (5, 4278501), (9, 2376945), (15, 1426167), (27, 792315), (45, 475389), (81, 264105), (135, 158463), (243, 88035), (405, 52821), (729, 29345), (1215, 17607), (3645, 5869)]