72117945

素因数分解:

$3^4\times 5^1\times {\mathrm{178069}}^1$

素因数の和:178086

約数の個数: 20

約数和(自身を含む): 129278820

約数和(自身を除く): 57160875

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 178069, 534207, 890345, 1602621, 2671035, 4807863, 8013105, 14423589, 24039315, 72117945]

約数ペア:

[(1, 72117945), (3, 24039315), (5, 14423589), (9, 8013105), (15, 4807863), (27, 2671035), (45, 1602621), (81, 890345), (135, 534207), (405, 178069)]