80839215

素因数分解:

$3^4\times 5^1\times {\mathrm{199603}}^1$

素因数の和:199620

約数の個数: 20

約数和(自身を含む): 144912504

約数和(自身を除く): 64073289

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 199603, 598809, 998015, 1796427, 2994045, 5389281, 8982135, 16167843, 26946405, 80839215]

約数ペア:

[(1, 80839215), (3, 26946405), (5, 16167843), (9, 8982135), (15, 5389281), (27, 2994045), (45, 1796427), (81, 998015), (135, 598809), (405, 199603)]