19902903

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{13457}}^1$

素因数の和:13506

約数の個数: 16

約数和(自身を含む): 29069280

約数和(自身を除く): 9166377

約数列:

[1, 3, 17, 29, 51, 87, 493, 1479, 13457, 40371, 228769, 390253, 686307, 1170759, 6634301, 19902903]

約数ペア:

[(1, 19902903), (3, 6634301), (17, 1170759), (29, 686307), (51, 390253), (87, 228769), (493, 40371), (1479, 13457)]