19728705

素因数分解:

$3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{8069}}^1$

素因数の和:8240

約数の個数: 16

約数和(自身を含む): 31763520

約数和(自身を除く): 12034815

約数列:

[1, 3, 5, 15, 163, 489, 815, 2445, 8069, 24207, 40345, 121035, 1315247, 3945741, 6576235, 19728705]

約数ペア:

[(1, 19728705), (3, 6576235), (5, 3945741), (15, 1315247), (163, 121035), (489, 40345), (815, 24207), (2445, 8069)]