21149343

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15359}}^1$

素因数の和:15388

約数の個数: 20

約数和(自身を含む): 33454080

約数和(自身を除く): 12304737

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15359, 46077, 138231, 261103, 414693, 783309, 1244079, 2349927, 7049781, 21149343]

約数ペア:

[(1, 21149343), (3, 7049781), (9, 2349927), (17, 1244079), (27, 783309), (51, 414693), (81, 261103), (153, 138231), (459, 46077), (1377, 15359)]