220121145

素因数分解:

$3^4\times 5^1\times {\mathrm{543509}}^1$

素因数の和:543526

約数の個数: 20

約数和(自身を含む): 394588260

約数和(自身を除く): 174467115

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 543509, 1630527, 2717545, 4891581, 8152635, 14674743, 24457905, 44024229, 73373715, 220121145]

約数ペア:

[(1, 220121145), (3, 73373715), (5, 44024229), (9, 24457905), (15, 14674743), (27, 8152635), (45, 4891581), (81, 2717545), (135, 1630527), (405, 543509)]