156720015

素因数分解:

$3^4\times 5^1\times {\mathrm{386963}}^1$

素因数の和:386980

約数の個数: 20

約数和(自身を含む): 280935864

約数和(自身を除く): 124215849

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 386963, 1160889, 1934815, 3482667, 5804445, 10448001, 17413335, 31344003, 52240005, 156720015]

約数ペア:

[(1, 156720015), (3, 52240005), (5, 31344003), (9, 17413335), (15, 10448001), (27, 5804445), (45, 3482667), (81, 1934815), (135, 1160889), (405, 386963)]