81434565

素因数分解:

$3^4\times 5^1\times {\mathrm{201073}}^1$

素因数の和:201090

約数の個数: 20

約数和(自身を含む): 145979724

約数和(自身を除く): 64545159

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 201073, 603219, 1005365, 1809657, 3016095, 5428971, 9048285, 16286913, 27144855, 81434565]

約数ペア:

[(1, 81434565), (3, 27144855), (5, 16286913), (9, 9048285), (15, 5428971), (27, 3016095), (45, 1809657), (81, 1005365), (135, 603219), (405, 201073)]