19843947

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{14411}}^1$

素因数の和:14440

約数の個数: 20

約数和(自身を含む): 31389336

約数和(自身を除く): 11545389

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 14411, 43233, 129699, 244987, 389097, 734961, 1167291, 2204883, 6614649, 19843947]

約数ペア:

[(1, 19843947), (3, 6614649), (9, 2204883), (17, 1167291), (27, 734961), (51, 389097), (81, 244987), (153, 129699), (459, 43233), (1377, 14411)]