20003971

素因数分解:

${\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:390

約数の個数: 16

約数和(自身を含む): 22153824

約数和(自身を除く): 2149853

約数列:

[1, 13, 73, 107, 197, 949, 1391, 2561, 7811, 14381, 21079, 101543, 186953, 274027, 1538767, 20003971]

約数ペア:

[(1, 20003971), (13, 1538767), (73, 274027), (107, 186953), (197, 101543), (949, 21079), (1391, 14381), (2561, 7811)]