21328455

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83641}}^1$

素因数の和:83666

約数の個数: 16

約数和(自身を含む): 36133344

約数和(自身を除く): 14804889

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 83641, 250923, 418205, 1254615, 1421897, 4265691, 7109485, 21328455]

約数ペア:

[(1, 21328455), (3, 7109485), (5, 4265691), (15, 1421897), (17, 1254615), (51, 418205), (85, 250923), (255, 83641)]