18913809

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{2707}}^1$

素因数の和:2864

約数の個数: 16

約数和(自身を含む): 26906688

約数和(自身を除く): 7992879

約数列:

[1, 3, 17, 51, 137, 411, 2329, 2707, 6987, 8121, 46019, 138057, 370859, 1112577, 6304603, 18913809]

約数ペア:

[(1, 18913809), (3, 6304603), (17, 1112577), (51, 370859), (137, 138057), (411, 46019), (2329, 8121), (2707, 6987)]