19989415

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{1721}}^1$

素因数の和:1850

約数の個数: 16

約数和(自身を含む): 25292736

約数和(自身を除く): 5303321

約数列:

[1, 5, 23, 101, 115, 505, 1721, 2323, 8605, 11615, 39583, 173821, 197915, 869105, 3997883, 19989415]

約数ペア:

[(1, 19989415), (5, 3997883), (23, 869105), (101, 197915), (115, 173821), (505, 39583), (1721, 11615), (2323, 8605)]