20903265

素因数分解:

$3^4\times 5^1\times {\mathrm{51613}}^1$

素因数の和:51630

約数の個数: 20

約数和(自身を含む): 37471764

約数和(自身を除く): 16568499

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51613, 154839, 258065, 464517, 774195, 1393551, 2322585, 4180653, 6967755, 20903265]

約数ペア:

[(1, 20903265), (3, 6967755), (5, 4180653), (9, 2322585), (15, 1393551), (27, 774195), (45, 464517), (81, 258065), (135, 154839), (405, 51613)]