18997653

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{2719}}^1$

素因数の和:2876

約数の個数: 16

約数和(自身を含む): 27025920

約数和(自身を除く): 8028267

約数列:

[1, 3, 17, 51, 137, 411, 2329, 2719, 6987, 8157, 46223, 138669, 372503, 1117509, 6332551, 18997653]

約数ペア:

[(1, 18997653), (3, 6332551), (17, 1117509), (51, 372503), (137, 138669), (411, 46223), (2329, 8157), (2719, 6987)]