204815565

素因数分解:

$3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{26309}}^1$

素因数の和:26493

約数の個数: 24

約数和(自身を含む): 357079320

約数和(自身を除く): 152263755

約数列:

[1, 3, 5, 9, 15, 45, 173, 519, 865, 1557, 2595, 7785, 26309, 78927, 131545, 236781, 394635, 1183905, 4551457, 13654371, 22757285, 40963113, 68271855, 204815565]

約数ペア:

[(1, 204815565), (3, 68271855), (5, 40963113), (9, 22757285), (15, 13654371), (45, 4551457), (173, 1183905), (519, 394635), (865, 236781), (1557, 131545), (2595, 78927), (7785, 26309)]