19982295

素因数分解:

$3^4\times 5^1\times {\mathrm{49339}}^1$

素因数の和:49356

約数の個数: 20

約数和(自身を含む): 35820840

約数和(自身を除く): 15838545

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 49339, 148017, 246695, 444051, 740085, 1332153, 2220255, 3996459, 6660765, 19982295]

約数ペア:

[(1, 19982295), (3, 6660765), (5, 3996459), (9, 2220255), (15, 1332153), (27, 740085), (45, 444051), (81, 246695), (135, 148017), (405, 49339)]