18662481

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{13553}}^1$

素因数の和:13582

約数の個数: 20

約数和(自身を含む): 29520612

約数和(自身を除く): 10858131

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 13553, 40659, 121977, 230401, 365931, 691203, 1097793, 2073609, 6220827, 18662481]

約数ペア:

[(1, 18662481), (3, 6220827), (9, 2073609), (17, 1097793), (27, 691203), (51, 365931), (81, 230401), (153, 121977), (459, 40659), (1377, 13553)]