21895515

素因数分解:

$3^6\times 5^1\times {\mathrm{6007}}^1$

素因数の和:6030

約数の個数: 28

約数和(自身を含む): 39400464

約数和(自身を除く): 17504949

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 6007, 18021, 30035, 54063, 90105, 162189, 270315, 486567, 810945, 1459701, 2432835, 4379103, 7298505, 21895515]

約数ペア:

[(1, 21895515), (3, 7298505), (5, 4379103), (9, 2432835), (15, 1459701), (27, 810945), (45, 486567), (81, 270315), (135, 162189), (243, 90105), (405, 54063), (729, 30035), (1215, 18021), (3645, 6007)]