20986755

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{82301}}^1$

素因数の和:82326

約数の個数: 16

約数和(自身を含む): 35554464

約数和(自身を除く): 14567709

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 82301, 246903, 411505, 1234515, 1399117, 4197351, 6995585, 20986755]

約数ペア:

[(1, 20986755), (3, 6995585), (5, 4197351), (15, 1399117), (17, 1234515), (51, 411505), (85, 246903), (255, 82301)]