128393505

素因数分解:

$3^4\times 5^1\times {\mathrm{317021}}^1$

素因数の和:317038

約数の個数: 20

約数和(自身を含む): 230157972

約数和(自身を除く): 101764467

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 317021, 951063, 1585105, 2853189, 4755315, 8559567, 14265945, 25678701, 42797835, 128393505]

約数ペア:

[(1, 128393505), (3, 42797835), (5, 25678701), (9, 14265945), (15, 8559567), (27, 4755315), (45, 2853189), (81, 1585105), (135, 951063), (405, 317021)]