81854145

素因数分解:

$3^4\times 5^1\times {\mathrm{202109}}^1$

素因数の和:202126

約数の個数: 20

約数和(自身を含む): 146731860

約数和(自身を除く): 64877715

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 202109, 606327, 1010545, 1818981, 3031635, 5456943, 9094905, 16370829, 27284715, 81854145]

約数ペア:

[(1, 81854145), (3, 27284715), (5, 16370829), (9, 9094905), (15, 5456943), (27, 3031635), (45, 1818981), (81, 1010545), (135, 606327), (405, 202109)]