127721205

素因数分解:

$3^4\times 5^1\times {\mathrm{315361}}^1$

素因数の和:315378

約数の個数: 20

約数和(自身を含む): 228952812

約数和(自身を除く): 101231607

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 315361, 946083, 1576805, 2838249, 4730415, 8514747, 14191245, 25544241, 42573735, 127721205]

約数ペア:

[(1, 127721205), (3, 42573735), (5, 25544241), (9, 14191245), (15, 8514747), (27, 4730415), (45, 2838249), (81, 1576805), (135, 946083), (405, 315361)]